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Active Bonuses were migrated to Player Bonus Powers in Module 16: Undermountain. Bonus Powers are classified into the categories Offense, Defense and Utility. One power can be in multiple categories. Bonus Powers are passive, and you can choose one Offense Power, one Defense Power, one Utility Power, and two of any category in the Universal Slots.

The value of the bonus depends on the companion's quality.
All Player Bonus Powers give +75/150/250/375/550/750 Combined Rating and equally as much Item Level if equipped.

To see your Bonus Powers in-game, go to the selection menu for a Universal Slot. Values listed correspond to the quality of your companion that gives the power. You can often tell what power belongs to which companion by it's name and icon, or see in the list below.
For non-equipped companions (for example in your inventory, the Auction House or the collections) you can see their Bonus Power by hovering over them to see their tooltip or right-clicking to inspect them. If you have one of that companion already equipped, values listed will correspond to your equipped companion's quality regardless of the quality of the companion you're looking at. If you don't have that companion equipped, shown values will depend on the quality of the companion you're hovering over/inspecting, or it will be just zeros, which is a bug.
Most in-game values are rounded to one decimal place, so for example 3.75 will show up as 3.8.

If you're looking for a bonus to a specific stat, check out Companions by Player Bonus.

List of Bonus Powers[]

Please note that at the moment most values in the power descriptions don't align with them in-game. For explanation see below. The description itself and the stats are right.

Icon Name Bonus
Category
Player Bonus Power Name
Icons Companion Dwarfshieldmaiden
[Adbar Shield Maiden]
Defense
+0.38%/0.75%/1.25%/1.88%/2.75%/3.75% Deflect Chance
+0.38%/0.75%/1.25%/1.88%/2.75%/3.75% Combat Advantage
+75/150/250/375/550/750 Combined Rating
Shieldmaiden's Discipline
Icons Companion Clericapprentice
[Apprentice Healer]
Utility
+1,500/3,000/5,000/7,500/11,000/15,000 Maximum Hit Points
+0.38%/0.75%/1.25%/1.88%/2.75%/3.75% Incoming Healing
+75/150/250/375/550/750 Combined Rating
Apprentice's Wisdom
Companion Cleric Disciple
[Cleric Disciple]
Utility
+0.03%/0.25%/0.75%/1.5%/2.5%/3.75% Incoming Healing Bonus
+0.03%/0.25%/0.75%/1.5%/2.5%/3.75% Power
+5/50/150/300/500/750 Combined Rating
Cleric Disciple's Wisdom
Icons Companion Half-elfconartist 01
[Con Artist]
Offense
10% chance, on critical hit, to deal 0.75/7.5/22.5/45/75/112.5 magnitude damage over time to enemies near your target for 10 seconds.
+5/50/150/300/500/750 Combined Rating
Conartist's Discipline
Icons Misc Collar Dog 01
[Damaran Shepherd]
Offense
+0.03%/0.25%/0.75%/1.5%/2.5%/3.75% Critical Chance
+0.03%/0.25%/0.75%/1.5%/2.5%/3.75% Critical Avoidance
+5/50/150/300/500/750 Combined Rating
Damaran Shepherd's Instincts
Companion Dog
[Dog]
Offense
+0.03%/0.25%/0.75%/1.5%/2.5%/3.75% Critical Severity
+0.03%/0.25%/0.75%/1.5%/2.5%/3.75% Power
+5/50/150/300/500/750 Combined Rating
Dog's Instincts
Companion Man-at-Arms
[Man at Arms]
Defense
+0.03%/0.25%/0.75%/1.5%/2.5%/3.75% Defense
+0.03%/0.25%/0.75%/1.5%/2.5%/3.75% Combat Advantage
+5/50/150/300/500/750 Combined Rating
Man-at-Arms's Discipline
Icons Misc Contract Mercenary 01
[Mercenary]
Offense
Utility
+0.03%/0.25%/0.75%/1.5%/2.5%/3.75% Power
+0.03%/0.25%/0.75%/1.5%/2.5%/3.75% Combat Advantage
+5/50/150/300/500/750 Combined Rating
Mercenary's Discipline
Companion Sellsword
[Sellsword]
Offense
Utility
+0.03%/0.25%/0.75%/1.5%/2.5%/3.75% Accuracy
+5/50/150/300/500/750 Combined Rating
+0.03%/0.25%/0.75%/1.5%/2.5%/3.75% Awareness
Sellsword's Discipline
Icons Misc Collar Dog Skeleton 01
[Skeletal Dog]
Defense
+100/1,000/3,000/6,000/10,000/15,000 Maximum Hit Points
+0.03%/0.25%/0.75%/1.5%/2.5%/3.75% Critical Avoidance
+5/50/150/300/500/750 Combined Rating
Skeleton Dog's Instincts
Companion Wayward Wizard
[Wayward Wizard]
Defense
Offense
+0.03%/0.25%/0.75%/1.5%/2.5%/3.75% Defense
+0.03%/0.25%/0.75%/1.5%/2.5%/3.75% Critical Severity
+5/50/150/300/500/750 Combined Rating
Wayward Wizard's Wisdom
Icons Inventory Misc Collar Orcwolf 01
[Armored Orc Wolf]
Offense
+0.75%/1.25%/1.88%/2.75%/3.75% Accuracy
+0.75%/1.25%/1.88%/2.75%/3.75% Critical Chance
+150/250/375/550/750 Combined Rating
Orc Wolf's Instincts
Noicon
[Baby Displacer Beast]
Offense
+50/150/300/500/750 Combined Rating
When you use a Daily power, increase your damage and Combat Advantage by 0.75%/1.25%/1.88%/2.75%/3.75% for 10 seconds. (15 second cooldown)
Baby Displacer Beast's Presence
Icon Companion Batiri
[Batiri]
Offense
+50/150/300/500/750 Combined Rating
+0.75%/2.25%/4.5%/7.5%/11.25% damage versus Bosses.
Batiri's Wisdom
Companion Baby Brownbear
[Bear Cub]
Defense
10% chance on being hit to become Outraged, adding 0.38%/1.13%/2.25%/3.75%/5.63% Critical Severity and Power for 10 seconds. This effect may only occur once every 30 seconds.
+50/150/300/500/750 Combined Rating
Baby Bear's Instincts
Icons Inventory Misc Collar Blinkdog 01
[Blink Dog]
Offense
+0.75%/1.25%/1.88%/2.75%/3.75% Deflect Chance
+0.75%/1.25%/1.88%/2.75%/3.75% Critical Avoidance
+150/250/375/550/750 Combined Rating
Blinkdog's Presence
Icon Companion Fireeye 01
[Blue Fire Eye]
Offense
+50/150/300/500/750 Combined Rating
+0.38%/1.13%/2.25%/3.75%/5.63% damage versus Kabal's minions.
Fire Eye's Insight
Icons Misc Collar Boar 04
[Boar]
Offense
+0.25%/0.75%/1.5%/2.5%/3.75% Deflect Chance
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Severity
+50/150/300/500/750 Combined Rating
Boar's Instincts (shows up as Baby Boar's Instincts as a bug)
Icon Companion Lunar Boar
[Boar Shoat]
Offense
+3,000/5,000/7,500/11,000/15,000 Maximum Hit Points
+0.75%/1.25%/1.88%/2.75%/3.75% Critical Severity
+150/250/375/550/750 Combined Rating
Baby Boar's Instincts
Icons Misc Collar Bear 04
[Cave Bear]
Offense
Utility
+1,000/3,000/6,000/10,000/15,000 Maximum Hit Points
+0.25%/0.75%/1.5%/2.5%/3.75% Accuracy
+50/150/300/500/750 Combined Rating
Cave Bear's Instincts
Icons Inventory Misc Contract Coldironwarrior 01
[Cold Iron Warrior]
Offense
+150/300/500/750 Combined Rating
+0.75%/2.25%/4.5%/7.5%/11.25% damage versus Fey creatures.
Cold Iron Warrior's Discipline
Icon Companion Slaad Blue
[Death Slaad]
Offense
+150/250/375/550/750 Combined Rating
10% chance to infect your target with a poison that does 30/50/75/110/150 magnitude damage and stacks up to 5 times. After the 5th stack, it explodes into a storm of poison damaging all enemies within a 15' radius.
Death Slaad's Presence
Icons Companion Dragonborn Female 01
[Dragonborn Raider]
Defense
Offense
+50/150/300/500/750 Combined Rating
+0.25%/0.75%/1.5%/2.5%/3.75% Awareness
+0.25%/0.75%/1.5%/2.5%/3.75% Combat Advantage
Dragonborn Raider's Discipline
Icons Companion DuergarGuard
[Duergar Guard]
Defense
+1.5%/2.5%/3.75%/5.5%/7.5% Critical Avoidance
+150/250/375/550/750 Combined Rating
Duergar Guard's Discipline
Icon Companion Dwarvenbattlerager
[Dwarven Battlerager]
Defense
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Severity
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Avoidance
+50/150/300/500/750 Combined Rating
Battlerager's Discipline
Icon Companion Elementalcultist
[Elemental Air Cultist]
Defense
10% chance, on damage taken, to reduce target's accuracy by 0.5%/1.5%/3%/5%/7.5% for 10 seconds.
+50/150/300/500/750 Combined Rating
Elemental Cultist's Wisdom
Companion Cleric Disciple
[Faithful Initiate]
Defense
+0.25%/0.75%/1.5%/2.5%/3.75% Defense
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Avoidance
+50/150/300/500/750 Combined Rating
Cleric's Wisdom
Icons Inventory Misc Collar Fawn 01
[Fawn of Shiallia]
Offense
Utility
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Chance
+0.25%/0.75%/1.5%/2.5%/3.75% Power
+50/150/300/500/750 Combined Rating
Fawn's Instincts
Icon Companion Baby Tiger Lunar
[Festive Tiger]
Offense
+0.75%/1.25%/1.88%/2.75%/3.75% Movement Speed
+0.75%/1.25%/1.88%/2.75%/3.75% Critical Chance
+150/250/375/550/750 Combined Rating
Lord of the Wilderness
Icons Companion FlameSprite
[Flame Sprite]
Offense
+0.25%/0.75%/1.5%/2.5%/3.75% Accuracy
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Chance
+50/150/300/500/750 Combined Rating
Flamesprite's Insight
Icons Companion Frostmimic
[Frost Mimic]
Defense
+0.25%/0.75%/1.5%/2.5%/3.75% Defense
+0.25%/0.75%/1.5%/2.5%/3.75% Awareness
+50/150/300/500/750 Combined Rating
Deceptive Insight
Icons Companion Gelatinouscube
[Gelatinous Cube]
Offense
Defense
+0.25%/0.75%/1.5%/2.5%/3.75% Power
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Avoidance
+50/150/300/500/750 Combined Rating
Gelatinous Cube's Insight
Icon Companion Goldfish
[Goldfish]
Offense
Utility
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Avoidance
+50/150/300/500/750 Combined Rating
+0.25%/0.75%/1.5%/2.5%/3.75% Incoming Healing Bonus
Goldfish's Instincts
Icons Companion GreenSlime
[Green Slime]
Defense
+0.5%/1.5%/3%/5%/7.5% Defense
+50/150/300/500/750 Combined Rating
Slime's Insight
Companion Wayward Wizard
[Halfling Wayward Wizard]
Utility
+50/150/300/500/750 Combined Rating
10% chance, on Encounter use, to reduce target's movement speed by 7%/11%/16%/22%/27% for 10 seconds.
Wayward Wisdom
Companion Hawk
[Hawk]
Offense
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Severity
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Chance
+50/150/300/500/750 Combined Rating
Hawk's Instincts
Icons Inventory Misc Armaments Helmet Haunted 01
[Helmite Paladin Ghost]
Offense
Utility
+1,000/3,000/6,000/10,000/15,000 Maximum Hit Points
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Chance
+150/300/500/750 Combined Rating
Ghost Paladin's Wisdom
Icons Companion Icesprite
[Ice Sprite]
Defense
+0.25%/0.75%/1.5%/2.5%/3.75% Accuracy
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Avoidance
+50/150/300/500/750 Combined Rating
Icesprite's Insight
Icon Companion IntellectDevourer
[Intellect Devourer]
Offense
+0.75%/1.25%/1.88%/2.75%/3.75% Awareness
+0.75%/1.25%/1.88%/2.75%/3.75% Combat Advantage
+150/250/375/550/750 Combined Rating
Intellect Devourer's Presence
Icons Inventory Misc Gemstone Iounstoneradiance
[Ioun Stone of Radiance]
Defense
Utility
+0.25%/0.75%/1.5%/2.5%/3.75% Deflect Chance
+50/150/300/500/750 Combined Rating
+0.25%/0.75%/1.5%/2.5%/3.75% Outgoing Healing Bonus
Radiant Insight
Icon Companion Kenku
[Kenku Archer]
Offense
Utility
+0.25%/0.75%/1.5%/2.5%/3.75% Power
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Severity
+50/150/300/500/750 Combined Rating
Kenku Archer's Wisdom
Icon Companion Kuotoa
[Kuo-toa]
Defense
Offense
On combat start, your Accuracy and Deflect are increased by 0.38%/1.13%/2.25%/3.75%/5.63% for 10 seconds
+50/150/300/500/750 Combined Rating
Kuo-Toa's Instincts
Icon Companion MoltenGalebDur
[Lava Galeb Duhr]
Offense
+150/250/375/550/750 Combined Rating
Deal up to 1.5%/2.5%/3.75%/5.5%/7.5% more damage with daily powers based on the percentage of your remaining health.
Lava Galeb Duhr's Presence
Icons Companion Lizardfolk
[Lizardfolk Shaman]
Utility
+50/150/300/500/750 Combined Rating
+0.25%/0.75%/1.5%/2.5%/3.75% Awareness
+0.25%/0.75%/1.5%/2.5%/3.75% Incoming Healing Bonus
Lizardman Shaman's Wisdom
Icon Companion Minstrel
[Minstrel]
Defense
Utility
+0.25%/0.75%/1.5%/2.5%/3.75% Power
+0.25%/0.75%/1.5%/2.5%/3.75% Awareness
+50/150/300/500/750 Combined Rating
Minstrel's Discipline
Icons Companion Moonshaedruid
[Moonshae Druid]
Defense
Utility
+1,000/3,000/6,000/10,000/15,00 Maximum Hit Points
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Avoidance
+50/150/300/500/750 Combined Rating
Moonshae Druid's Wisdom
Icons Companion Mystagogue
[Mystagogue]
Offense
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Severity
+50/150/300/500/750 Combined Rating
+0.25%/0.75%/1.5%/2.5%/3.75% Combat Advantage
Mystagogue's Wisdom
Icon Companion Netheresewarlock
[Netherese Arcanist]
Offense
+0.5%/1.5%/3%/5%/7.5% extra damage against enemies that are not facing you.
+50/150/300/500/750 Combined Rating
Netherese Warlock's Wisdom
Icons Companion Siegedefender
[Neverember Guard Archer]
Utility
+0.25%/0.75%/1.5%/2.5%/3.75% Power
+0.25%/0.75%/1.5%/2.5%/3.75% Defense
+50/150/300/500/750 Combined Rating
Archer Guard's Discipline
Icon Companion Baby Ox
[Ox Stot]
Offense
+150/250/375/550/750 Combined Rating
20% chance, on Encounter use, to stun your target for 3 seconds.
Ox Stot's Instincts
Icons Inventory Misc Plants Pig 01
[Pig]
Utility
0.5%/1.5%/3%/5%/7.5% of your Max HP healed every second you are Controlled.
+50/150/300/500/750 Combined Rating
Pig's Instincts
Icons Inventory Misc Collar PortalHound 01
[Portal Hound]
Defense
+150/250/375/550/750 Combined Rating
10% chance to gain +0.75%/1.25%/1.88%/2.75%/3.75% awareness for 10 seconds when damaging enemies.
+1.5%/2.5%/3.75%/5.5%/7.5% damage versus Kabal's minions.
Portalhound's Presence
Icons Inventory Misc Contract Forestfolk 01
[Quickling]
Offense
Utility
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Chance
+50/150/300/500/750 Combined Rating
+0.25%/0.75%/1.5%/2.5%/3.75% Outgoing Healing Bonus
Quickling's Wisdom
Icon Companion Lunar Rabbit
[Rabbit Kit]
Utility
+0.75%/1.25%/1.88%/2.75%/3.75% Movement Speed.
+0.75%/1.25%/1.88%/2.75%/3.75% Critical Avoidance.
+150/250/375/550/750 Combined Rating
Elusive Rabbit
Icon Companion Baby Rat
[Rat Pup]
Offense
+150/250/375/550/750 Combined Rating
30% chance, on Encounter use, to cause your target to bleed for an additional 30/50/75/110/150 magnitude damage over 5 seconds.
Rat Pup's Instincts
Icons Inventory Misc Contract Spellsword 01
[Rebel Mercenary]
Offense
Utility
+0.25%/0.75%/1.5%/2.5%/3.75% Accuracy
+50/150/300/500/750 Combined Rating
+0.25%/0.75%/1.5%/2.5%/3.75% Outgoing Healing Bonus
Sellsword's Distinct Discipline
Icons Companion RenegadeEvoker
[Renegade Evoker]
Offense
20% chance on taking critical damage to do 5%/15%/30%/50%/75% damage as fire to nearby enemies.
+50/150/300/500/750 Combined Rating
Evoker's Wisdom
Icons Companion RenegadeIllusionist
[Renegade Illusionist]
Defense
+0.25%/0.75%/1.5%/2.5%/3.75% Accuracy
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Avoidance
+50/150/300/500/750 Combined Rating
Illusory Wisdom
Icons Companion Repentedcultist
[Repentant Dragon Cultist]
Offense
+50/150/300/500/750 Combined Rating
When attacking a target with greater than 50% health, your daily powers do 0.5%/1.5%/3%/5%/7.5% additional magnitude damage.
Doubled effect vs Dragons.
Repentent Cultist's Discipline
Icons Companion Rimefiregolem
[Rimefire Golem]
Offense
Utility
+3,000/5,000/7,500/11,000/15,000 Maximum Hit Points
+0.75%/1.25%/1.88%/2.75%/3.75% Critical Severity
+150/250/375/550/750 Combined Rating
Rimefire Golem's Presence
Icons Companion Siegemaster
[Siege Master]
Offense
+150/300/500/750 Combined Rating
Increases the power of your At-Will powers by 2.25%/4.5%/7.5%/11.25%.
This effect is doubled while on Stronghold map.
Siege Master's Discipline
Icon Companion Dragonborncleric
[Silver-Scaled Cleric Disciple]
Utility
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Chance
+50/150/300/500/750 Combined Rating
+0.25%/0.75%/1.5%/2.5%/3.75% Incoming Healing Bonus
Silverscale Cleric's Wisdom
Inventory Ringoflethalprecision G3
[Skeleton]
Defense
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Avoidance
+0.25%/0.75%/1.5%/2.5%/3.75% Defense
+50/150/300/500/750 Combined Rating
Boney Wisdom
Icons Inventory Misc Collar Fawn Snowy 01
[Snowy Fawn]
Utility
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Severity
+0.25%/0.75%/1.5%/2.5%/3.75% Defense
+50/150/300/500/750 Combined Rating
Snow Fawn's Instincts
Icon Companion Broom
[Splinters]
Defense
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Severity
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Avoidance
+50/150/300/500/750 Combined Rating
Broom's Insight
Icon Companion Gargoyle Def
[Staldorf]
Offense
+1.5%/2.5%/3.75%/5.5%/7.5% Combat Advantage
+150/250/375/550/750 Combined Rating
Staldorf's Presence
Event Simril Refinement R4 Gold
[Star of Simril]
Offense
Utility
+667/2,000/4,000/6,667/10,000 Maximum Hit Points
+0.17%/0.5%/1%/1.67%/2.5% Critical Chance
+0.33%/1%/2%/3.33%/5% Gold Bonus
+50/150/300/500/750 Combined Rating
Star of Simril's Insight
Icons Inventory Misc Contract StormRider 01
[Storm Rider]
Utility
+0.25%/0.75%/1.5%/2.5%/3.75% Power
+1,000/3,000/6,000/10,000/15,000 Maximum Hit Points
+50/150/300/500/750 Combined Rating
Stormrider's Discipline
Icons Companion Swashbuckler
[Swashbuckler]
Offense
20% chance on taking critical damage to increase your critical strike by 0.5%/1.5%/3%/5%/7.5% for 10 seconds.
+50/150/300/500/750 Combined Rating
Swashbuckler's Discipline
Icons Companion TravelingEntertainer
[Traveling Entertainer]
Offense
+0.25%/0.75%/1.5%/2.5%/3.75% Critical Chance
+0.25%0.75%/1.5%/2.5%/3.75% Defense
+50/150/300/500/750 Combined Rating
Entertainer's Discipline
Icons Inventory Misc Contract WildHuntRider 01
[Wild Hunt Rider]
Offense
+50/150/300/500/750 Combined Rating
10% chance, on Encounter use, to increase combat advantage by 0.75%/2.25%/4.5%/7.5%/11.25% for 10 seconds.
Wild Hunter's Discipline
Icon Companion Baby Winterfox
[Winter Fox]
Defense
If you take more than 20% of your Max HP in a single blow, you gain 0.38%/1.13%/2.25%/3.75%/5.63% Critical Severity and Power for 10 seconds and Heal for 0.75% of your Maximum Hit Points over the next 5 seconds. This effect may only occur once every 60 seconds.
+50/150/300/500/750 Combined Rating
Winterfox's Oblige
Companion Wolf
[Wolf]
Offense
Utility
+0.5%/1.5%/3%/5%/7.5% Critical Severity
+50/150/300/500/750 Combined Rating
Wolf's Instincts
Icon Companion Yethhound 01
[Yeth Hound]
Offense
+150/250/375/550/750 Combined Rating
+2.25%/3.75%/5.63%/8.25%/11.25% damage versus Gyrion's minions
Yethhound's Presence
Icons Companion Yeti
[Young Yeti]
Offense
10% chance, when hit, to become blood thirsty, increasing your power by 1.13%/1.88%/ 2.81%/4.13%/5.63% for 10 seconds. This effect may only occur once every 30 seconds.
+150/250/375/550/750 Combined Rating
Yeti's Presence
Companion Acolyte of Kelemvor
[Acolyte of Kelemvor]
Utility
+0.75%/1.25%/1.88%/2.75%/3.75% Deflect Chance
+0.75%/1.25%/1.88%/2.75%/3.75% Incoming Healing Bonus
+150/250/375/550/750 Combined Rating
Acolyte's Wisdom
Icons Companion AstralDeva
[Astral Deva]
Defense
10% chance on hit to heal companion and player for 2.5%/3.75%/5.5%/7.5% of their maximum hitpoints.
+250/375/550/750 Combined Rating
Astral Deva's Insight
Icons Companion Barbarianshaman
[Barbarian Shaman]
Offense
Utility
+0.75%/1.5%/2.5%/3.75% Combat Advantage
+0.75%/1.5%/2.5%/3.75% Power
+150/300/500/750 Combined Rating
Barbarian Shaman's Wisdom
Icons Companion Blacksmith
[Blacksmith]
Utility
10% chance to reflect 0.75%/1.5%/2.5%/3.75% of damage taken up to 50,000. If the same target is hit 4 times it will reflect 3 times the damage taken.
+150/300/500/750 Combined Rating
Blacksmith's Discipline
Icon Companion Maguscambion
[Cambion Magus]
Offense
+0.75%/1.5%/2.5%/3.75% Accuracy
+0.75%/1.5%/2.5%/3.75% Critical Severity
+150/300/500/750 Combined Rating
Cambion's Insight
Icons Inventory Misc Trinket Cantankerousmage 03
[Cantankerous Mage]
Defense
+0.75%/1.5%/2.5%/3.75% Accuracy
+0.75%/1.5%/2.5%/3.75% Defense
+150/300/500/750 Combined Rating
Cantankerous Mage's Wisdom
Collar Kittycat 04
[Cat]
Defense
Utility
+0.75%/1.5%/2.5%/3.75% Deflect Chance
+0.75%/1.5%/2.5%/3.75% Defense
+150/300/500/750 Combined Rating
Cat's Instincts
Armaments Blade 02
[Dancing Blade]
Offense
+0.75%/1.5%/2.5%/3.75% Critical Severity
+150/300/500/750 Combined Rating
+0.75%/1.5%/2.5%/3.75% Combat Advantage
Dancing Blade's Insight
Armaments Shield 03
[Dancing Shield]
Defense
+0.75%/1.5%/2.5%/3.75% Deflect Chance
+0.75%/1.5%/2.5%/3.75% Critical Chance
+150/300/500/750 Combined Rating
Dancing Shield's Insight
Icon Companion PaladinSquire
[Dedicated Squire]
Utility
+0.75%/1.5%/2.5%/3.75% Accuracy
+150/300/500/750 Combined Rating
+0.75%/1.5%/2.5%/3.75% Incoming Healing Bonus
Squire's Discipline
Icons Companion Astraldeva Def
[Deva Champion]
Utility
+0.75%/1.5%/2.5%/3.75% Critical Avoidance
+150/300/500/750 Combined Rating
+0.75%/1.5%/2.5%/3.75% Incoming Healing Bonus
Deva Champion's Insight
Icons Companion Dragonborn 01
[Dragonborn Brawler]
Defense
+0.75%/1.5%/2.5%/3.75% Deflect Chance
+150/300/500/750 Combined Rating
+0.75%/1.5%/2.5%/3.75% Awareness
Dragonborn's Brawler's Discipline
Icons Companion DreadWarriorRevenant
[Dread Warrior]
Utility
10% chance, on damage taken, to become enraged, increasing threat generation by 3%/6%/10%/15% for 10 seconds.
+150/300/500/750 Combined Rating
Dreadwarrior's Insight
Icon Companion Chickenmancer
[Earl the Chickenmancer]
Offense
Utility
10% chance, on Encounter use, to turn a minion target into a chicken for 10 seconds.
+300/500/750 Combined Rating
Chickenmancer's Discipline
Icon Companion Intern 02
[Elite Intern]
Offense
+0.75%/1.5%/2.5%/3.75% Critical Severity
+150/300/500/750 Combined Rating
+0.75%/1.5%/2.5%/3.75% Awareness
Elite Intern's Wisdom
Noicon
[Erinyes of Avernus]
Defense
Increase damage resistance against Demons by 3.8%/5.6%/8.3%/11%
+150/300/500/750 Combined Rating
Erinyes's Defense
Icons Companion Erinyes
[Erinyes of Belial]
Offense
+0.75%/1.5%/2.5%/3.75% Critical Severity
+0.75%/1.5%/2.5%/3.75% Defense
+150/300/500/750 Combined Rating
Erinyes's Wisdom
Icons Inventory Misc Collar Panther Fey 01
[Fey Panther]
Defense
+0.75%/1.5%/2.5%/3.75% Accuracy
+150/300/500/750 Combined Rating
+0.75%/1.5%/2.5%/3.75% Combat Advantage
Feypanther's Presence
Misc Trinket Haunted 01
[Ghost]
Offense
Utility
+0.75%/1.5%/2.5%/3.75% Power
+0.75%/1.5%/2.5%/3.75% Critical Chance
+150/300/500/750 Combined Rating
Ghost's Wisdom
Icons Companion Grazilaxx
[Grazilaxx]
Defense
Offense
+0.75%/1.5%/2.5%/3.75% Deflect Chance
+0.75%/1.5%/2.5%/3.75% Critical Chance
+150/300/500/750 Combined Rating
Grazilaxx's Wisdom
Icon Companion Greenscale Hunter
[Greenscale Bowman]
Utility
+150/300/500/750 Combined Rating
10% chance on using an At-Will power to restore 0.6%/1.2%/2%/3% of Max Stamina.
Greenscale Hunter's Discipline
Icon Companion HarperBard
[Harper Bard]
Defense
Utility
+3,000/6,000/10,000/15,000 Maximum Hit Points
+150/300/500/750 Combined Rating
+0.75%/1.5%/2.5%/3.75% Awareness
Bard's Discipline
Noicon
[Hezrou]
Defense
Utility
Increase damage resistance against Devils by 2.5%/3.8%/5.5%/7.5%
+250/375/550/750 Combined Rating
Hezrou's Defense
Icons Companion ForestHawk
[Hunting Hawk]
Offense
Utility
+150/300/500/750 Combined Rating
At-Will damage bonus increases as the range increases. Maximum of 1.5%/3%/5%/7.5% at 80 feet.
Hunting Hawk's Presence
Companion Ioun Stone of Allure
[Ioun Stone of Allure]
Defense
Utility
+0.75%/1.5%/2.5%/3.75% Incoming Healing Bonus
+0.75%/1.5%/2.5%/3.75% Power
+150/300/500/750 Combined Rating
Alluring Insight
Companion Jagged Dancing Blade
[Jagged Dancing Blade]
Offense
+150/300/500/750 Combined Rating
10% chance, on Encounter use, to reduce target's Defense by -1.5%/3%/5%/7.5% for 10 seconds.
Jagged Blade's Insight
Icon Inventory Trinket Leprechaun 01
[Leprechaun]
Defense
+0.75%/1.5%/2.5%/3.75% Critical Avoidance
+150/300/500/750 Combined Rating
+0.75%/1.5%/2.5%/3.75% Combat Advantage
Leprechaun's Insight
Icons Companion Halflingthief
[Lightfoot Thief]
Offense
+0.75%/1.5%/2.5%/3.75% Critical Chance
+0.75%/1.5%/2.5%/3.75% Critical Severity
+150/300/500/750 Combined Rating
Halfling Thief's Discipline
Inventory Gond MechanicalToy
[Mini Apparatus of Gond]
Defense
Offense
+0.75%/1.5%/2.5%/3.75% Defense
+0.75%/1.5%/2.5%/3.75% Critical Severity
+150/300/500/750 Combined Rating
Gond's Insight
Companion Neverember Guard
[Neverember Guard]
Offense
+150/300/500/750 Combined Rating
+0.75%/1.5%/2.5%/3.75% Awareness
+0.75%/1.5%/2.5%/3.75% Outgoing Healing Bonus
Neverember Guard's Discipline
Icon Companion Pewtergolem
[Pewter Golem]
Defense
Utility
+1.25%/1.88%/2.75%/3.75% Defense
+1.25%/1.88%/2.75%/3.75% Critical Chance
+250/375/550/750 Combined Rating
Pewter Golem's Presence
Icons Inventory Misc Gemstone Phasespider 01
[Phase Spider]
Defense
+0.75%/1.25%/1.88%/2.75%/3.75% Critical Chance
+0.75%/1.25%/1.88%/2.75%/3.75% Combat Advantage
+150/250/375/550/750 Combined Rating
Phasespider's Presence
Icon Companion Elvenpriestess
[Priestess of Sehanine Moonbow]
Defense
+0.75%/1.5%/2.5%/3.75% Deflect Chance
+150/300/500/750 Combined Rating
+0.75%/1.5%/2.5%/3.75% Awareness
Sehanine's Wisdom
Icons Companion Priestessofsune
[Priestess of Sune]
Defense
+0.75%/1.5%/2.5%/3.75% Deflect Chance
+0.75%/1.5%/2.5%/3.75% Accuracy
+150/300/500/750 Combined Rating
Sune's Wisdom
Companion Quasit
[Quasit]
Defense
Utility
+0.75%/1.5%/2.5%/3.75% Deflect Chance
+0.75%/1.5%/2.5%/3.75% Critical Severity
If you have the 3 set bonus for the Drowcraft or Dusk armor sets these values are doubled.
+150/300/500/750 Combined Rating
Quasit's Insight
Icons Companion Dragonstone 01
[Red Dragon Ioun Stone]
Defense
Utility
+3,000/6,000/10,000/15,000 Maximum Hit Points
+150/300/500/750 Combined Rating
+0.75%/1.5%/2.5%/3.75% Incoming Healing Bonus
Dragon's Insight
Icon Companion Slaad Red
[Red Slaad]
Defense
+1.25%/1.88%/2.75%/3.75% Accuracy
+1.25%/1.88%/2.75%/3.75% Critical Severity
+250/375/550/750 Combined Rating
Red Slaad's Presence
Icon Companion Redeemedfallen
[Redeemed Fallen]
Defense
+0.75%/1.50%/2.50%/3.75% Accuracy
+150/300/500/750 Combined Rating
+0.75%/1.50%/2.50%/3.75% Combat Advantage
Forgotten Instincts
Companion Slyblade Kobold
[Slyblade Kobold]
Offense
+150/300/500/750 Combined Rating
Increases Encounter damage against Disabled, or Held targets by 2.25%/4.5%/7.5%/11.25%.
Slyblade Kobold's Discipline
Noicon
[Songstress]
Defense
Utility
+1.3%/1.9%/2.8%/3.8% Control Resistance
+1.3%/1.9%/2.8%/3.8% Incoming Healing Bonus
+150/300/500/750 Combined Rating
Songstress Serenade
Companion Tomb Spider
[Tomb Spider]
Offense
+150/300/500/750 Combined Rating
10% chance, on Encounter use, to poison your target causing 30/60/100/150 magnitude damage over 5 seconds.
Tombspider's Instincts
Companion Neverember Guard
[Vallenhas Elite Soldier]
Offense
Utility
+0.5%/1%/1.67%/2.5% Outgoing Healing Bonus
+0.5%/1%/1.67%/2.5% Awareness
+150/300/500/750 Combined Rating
+4.5%/9%/15%/22.5% damage versus Avernus devils.
Vallenhas' Discipline
Icon Companion Zariel General
[Vanguard of the Citadel]
Defense
+3,000/6,000/10,000/15,000 Maximum Hit Points
0.75%/1.50%/2.50%/3.75% Critical Avoidance
+150/300/500/750 Combined Rating
Divine Insight
Icons Companion Wanderingscarecrow
[Wandering Scarecrow]
Offense
Utility
+1.25%/1.88%/2.75%/3.75% Critical Severity
+1.25%/1.88%/2.75%/3.75% Defense
+250/375/550/750 Combined Rating
Scarecrow's Presence
Icons Misc Collar Boar War
[War Boar]
Offense
+150/300/500/750 Combined Rating
10% chance, on At-Will use, to cause an aggravated wound dealing 30/60/100/150 magnitude damage over time.
War Boar's Instincts
Icons Companion Wardog
[War Dog]
Defense
+0.75%/1.5%/2.5%/3.75% Awareness
+0.75%/1.5%/2.5%/3.75% Defense
+150/300/500/750 Combined Rating
Wardog's Instincts
Companion Wererat Thief
[Wererat Thief]
Offense
+150/300/500/750 Combined Rating
10% chance, on Encounter use, to poison target slowing them by 3.6%/6.6%/11%/16.5% and dealing 15/30/50/75 magnitude damage over time.
Wererat Discipline
Icon Companion Werewolf Def
[Werewolf]
Offense
+1.25%/1.88%/2.75%/3.75% Incoming Healing Bonus
+1.25%/1.88%/2.75%/3.75% Defense
+250/375/550/750 Combined Rating
Werewolf's Presence
Noicon
[Winter Wolf]
Defense
Offense
+1.3%/1.9%/2.8%/3.8% Deflect Chance
+1.3%/1.9%/2.8%/3.8% Critical Avoidance
+250/375/550/750 Combined Rating
Winter Wolf's Instincts
Icons Companion ZhentarimWarlock
[Zhentarim Warlock]
Offense
Utility
+3,000/6,000/10,000/15,000 Maximum Hit Points
+150/300/500/750 Combined Rating
+0.75%/1.5%/2.5%/3.75% Combat Advantage
Zhentarim Warlock's Wisdom
Icon M19 Companion Abyssal Chicken
[Abyssal Chicken]
Offense
When you kill an enemy, you have a 7.5%/11%/15% chance to summon an Abyssal Chicken for 10 seconds. (20 second cooldown)
+375/550/750 Combined Rating
Abyssal Guidance
Icon Companion Archon Air
[Air Archon]
Offense
Utility
+250/375/550/750 Combined Rating
On Daily use increase your power by 2.5%/3.75%/5.5%/7.5% for 10 seconds. This can only occur once every 10 seconds.
Each additional equipped Archon player bonus increases this effect by one quarter of their own bonus.
Air Archon's Insight
Icons Companion Alchemist
[Alchemist Experimenter]
Offense
Utility
+1.88%/2.75%/3.75% Critical Chance
+1.88%/2.75%/3.75% Combat Advantage
+375/550/750 Combined Rating
Alchemist's Discipline
Icon Companion Compy Pack
[Alpha Compy]
Utility
+3.75%/5.5%/7.5% Power
This effect is doubled in all of Chult.
+375/550/750 Combined Rating
Compy's Instincts
Icon Companion Ambushdrake
[Ambush Drake]
Offense
Utility
+1.88%/2.75%/3.75% Critical Severity
+1.88%/2.75%/3.75% Awareness
+375/550/750 Combined Rating
Ambush Drake's Instincts
Companion Angel of Protection
[Angel of Protection]
Defense
When you are revived you will receive a shield equal to 7.5%/11%/15% of your Maximum Hit Points.
+375/550/750 Combined Rating
Angel's Insight
Icons Inventory Misc Contract Aranea 01
[Aranea]
Offense
+375/550/750 Combined Rating
On attack you have a 10% chance to have lightning strike your target doing 56.3/96.5/112.5 magnitude damage.
Aranea's Wisdom
Icons Companion Blackassassindrake
[Assassin Drake]
Offense
+0.75%/1.25%/1.88%/2.75%/3.75% Accuracy
+0.75%/1.25%/1.88%/2.75%/3.75% Critical Severity
+150/250/375/550/750 Combined Rating
Assassin Drake's Presence
Icon Companion Battlefieldmedic
[Battlefield Medic]
Utility
+300/500/750 Combined Rating
+1.5%/2.5%/3.75% Combat Advantage
+1.5%/2.5%/3.75% Incoming Healing Bonus
Battlefield Medic's Wisdom
Icon Companion Scorpion Black
[Black Death Scorpion]
Offense
+300/500/750 Combined Rating
When attacking you have a 10% chance to poison your target for 45/75/112.5 magnitude damage.
Black Scorpion's Instincts
Icon Companion Blackdragonioun
[Black Dragon Ioun Stone]
Offense
+3%/5%/7.5% Critical Chance
+300/500/750 Combined Rating
Black Dragon's Insight
Icons Companion BlackIceIounStone
[Black Ice Ioun Stone]
Utility
-9%/15%/22.5% Black Ice consumption
+300/500/750 Combined Rating
Black Ice Stone's Insight
Icons Companion Blackicedwarf 01
[Black Ice Prospector]
Defense
+1.5%/2.5%/3.75% Deflect Chance
+1.5%/2.5%/3.75% Critical Avoidance
+300/500/750 Combined Rating
Dwarf Pickman's Discipline
Icons Inventory Misc Contract Book Imp 04
[Book Imp]
Offense
Utility
+1.88%/2.75%/3.75% Accuracy
+1.88%/2.75%/3.75% Combat Advantage
+375/550/750 Combined Rating
Bookimp's Presence
Icon Companion Bruenor
[Bruenor Battlehammer]
Defense
+1.5%/2.5%/3.75% Awareness.
+1.5%/2.5%/3.75% Defense.
+300/500/750 Combined Rating

Each equipped Companion of the Hall player bonus increases the non combined rating bonuses by 25% of their own bonus.
Bruenor's Bulwark
Companion Baby Bulette
[Bulette Pup]
Defense
If you take more than 20% of your Max HP in a single blow, you Heal for 4.5%/7.5%/11.25%/16.5%/22.5% of your Maximum Hit Points over the next 5 seconds. This effect may only occur once every 60 seconds.
+150/250/375/550/750 Combined Rating
Baby Bulette's Presence
Icon Companion Baby Butterfly
[Butterfly]
Defense
10% chance, when hit, to gain the movement of a butterfly, increasing your Deflect Severity by 5%/7.33%/10% for 10 seconds.
+375/550/750 Combined Rating
Butterfly's Grace
Icon Companion CattiBrie
[Catti-brie]
Utility
+1.88%/2.75%/3.75% Movement Speed
+1.88%/2.75%/3.75% Control Resistance
+375/550/750 Combined Rating
Each equipped Companion of the Hall player bonus increases the non combined rating bonuses by 25% of their own bonus.
Catti's Coordination
Icon Companion Celeste
[Celeste]
Utility
When you take damage while below 50% Health you will be healed for 6%/10%/15% of your max hit points. Can only be applied once every 30 seconds.
+300/500/750 Combined Rating
Celeste's Wisdom
Icons Companion Chicken
[Chicken]
Defense
4.5%/7.5%/11.25% movement speed for 10 seconds and a 4.5%/7.5%/11.25% damage debuff on your attacker if you take damage greater than 25% Maximum Hit Points in a single blow. Can only occur once every 30 seconds.
+300/500/750 Combined Rating
Chicken's Instincts
Icon Companion Chultan Hunter
[Chultan Hunter]
Utility
Increases the drop of Chultan Riches and Forgotten Totems in Chult by 10%.
+300/500/750 Combined Rating
Chultan Hunter's Discipline
Icon Companion Chult Tiger
[Chultan Tiger]
Offense
Movement Speed is increased by 2.25%/3.75%/5.63% and your Power by 2.25%/3.75%/5.63% for 10 seconds when you enter combat.
+300/500/750 Combined Rating
Tiger's Instincts
Icons Companion Cockatrice
[Cockatrice]
Utility
Whenever taking damage, you have a 10% chance to do 1.88/2.75/3.75 magnitude damage and root the attacker for 6 seconds (3 seconds if target is player).
+375/550/750 Combined Rating
Cockatrice's Presence
Icon Companion Crab
[Crab]
Utility
10% chance on dealing damage to root the target and reduce their deflect by 1.5%/2.5%/3.75% for 5 seconds. This can only occur once every 30 seconds.
+300/500/750 Combined Rating
Crab's Instincts
Icons Companion Rimefiregolem
[Crystal Golem]
Offense
Utility
+6,000/10,000/15,000 Maximum Hit Points
+1.5%/2.5%/3.75% Power
+300/500/750 Combined Rating
Crystal Golem's Presence
Icons Companion FrostMimic 02
[Cunning Mimic]
Offense
+1.5%/2.5%/3.75% Forte
+1.5%/2.5%/3.75% Awareness (if Tank)
+1.5%/2.5%/3.75% Critical Chance (if DPS)
+1.5%/2.5%/3.75% Outgoing Healing Bonus (if Healer)
+300/500/750 Combined Rating
Cunning Hunter
Icon Companion Cyclops Drummer
[Cyclops War Drummer]
Utility
+1.88%/2.75%/3.75% Incoming Healing
+7,500/11,000/15,000 Maximum Hit Points
+375/550/750 Combined Rating
War Drummer's Discipline
Noicon
[Dark Dealer]
Utility
Increases the amount of campaign currencies earned in the Northdark Reaches campaign by 10%.
+1.9%/2.8%/3.8% Combat Advantage.
+1.9%/2.8%/3.8% Accuracy.
+375/550/750 Combined Rating
Dark Dealings
Icons Companion Deepcrowhatchling
[Deep Crow Hatchling]
Offense
+3.75%/5.5%/7.5% Power
+375/550/750 Combined Rating
Baby Deep Crow's Presence
Icon Companion DisplacerBeast
[Displacer Beast]
Offense
10% chance, on critical hit, to increase your critical strike and critical severity by 1.88%/2.75%/3.75% for 6 seconds.
+375/550/750 Combined Rating
Pouncer's Instincts
Icon Companion Dragonhunter
[Dragon Hunter]
Offense
+300/500/750 Combined Rating
+4.5%/7.5%/11% damage versus Dragon creatures
Dragon's Bane
Noicon
[Dragonborn Grillmaster]
Offense
Defense
+1.5%/2.5%/3.75% Power
+1.5%/2.5%/3.75% Movement Speed
+300/500/750 Combined Rating
Hot Foot
Icon Companion Drizzt
[Drizzt Do'Urden]
Offense
+1.5%/2.5%/3.75% Critical Chance.
+1.5%/2.5%/3.75% Critical Severity
+300/500/750 Combined Rating
Drizzt's Devastation
Icons Companion Duergartheurge
[Duergar Theurge]
Defense
+1.5%/2.5%/3.75% Critical Severity
+300/500/750 Combined Rating
+1.5%/2.5%/3.75% Incoming Healing Bonus
Duergar Theurge's Discipline
Icon Companion Archon Earth
[Earth Archon]
Defense
Offense
+300/500/750 Combined Rating
10% chance when you attack to increase your defense by 3%/5%/7.5% for 10 seconds.
Each additional equipped Archon player bonus increases this effect by up to one quarter of their bonus.
Earth Archon's Insight
Icon Companion Eladrin
[Eladrin]
Utility
Increases the drop rate of campaign currencies in the Sharandar campaign by 10%.
Increases damage resistance against Fey and Trolls by 6%/10%/15%
+300/500/750 Combined Rating
Eladrin's Senses
Icon Companion XegYi 01
[Energon]
Utility
+12,000/20,000/30,000 Maximum Hit Points
+300/500/750 Combined Rating
Xegyi's Insight
Noicon
[Etrien]
Utility
+1.25%/1.83%/2.5% Movement Speed.
+1.25%/1.83%/2.5% Action Point Gain
+1.25%/1.83%/2.5% Recharge Speed
+375/550/750 Combined Rating
Etrien's Exuberance
Icons Companion Feral Velicoraptor
[Feral Velociraptor]
Offense
You are Part of the Pack.
You and any allies that are Part of the Pack gain 1.88%/2.75%/3.75% awareness.
This effect may stack up to 5 times.
+150/375/550/750 Combined Rating
Feral Raptor's Instincts
Icon Companion SylphFeywild
[Feywild Sylph]
Defense
+1.5%/2.5%/3.75% Critical Chance
+300/500/750 Combined Rating
+1.5%/2.5%/3.75% Awareness
Sylph's Insight
Companion Fire Archon
[Fire Archon]
Defense
Offense
+300/500/750 Combined Rating
10% chance on At-Will use to increase your Combat Advantage by 3%/5%/7.5% for 10 seconds.
Each additional equipped Archon player bonus increases this effect by one quarter of their bonus.
Fire Archon's Insight
Icon Companion Kobold Summer
[Fireblossom Zealot]
Defense
+375/550/750 Combined Rating
50% change, on Daily use, to heal you for 12%/18%/25% of your Maximum Hit Points.
Doom and Bloom
Icon Companion Flamingskull
[Flaming Skull]
Defense
Offense
+1.5%/2.5%/3.75% Combat Advantage
+1.5%/2.5%/3.75% Defense
+300/500/750 Combined Rating
Cryptic Insight
Icon Companion Galebdur Frozen
[Frozen Galeb Duhr]
Defense
Increases damage resistance up to 1.5%/2.5%/3.75%/5.5%/7.5% based on the percentage of your remaining health.
+150/250/375/550/750 Combined Rating
Ice Galeb Duhr's Presence
Misc Trinket Primal 01
[Galeb Duhr]
Offense
+250/375/550/750 Combined Rating
10% chance on using an Encounter power to restore 2.5%/3.75%/5.5%/7.5% of Max Stamina.
Galeb Duhr's Presence
Icon Companion Gith
[Githyanki]
Utility
+1.5%/2.5%/3.75% Stamina Regeneration
+1.5%/2.5%/3.75% Power
+300/500/750 Combined Rating
Githyanki Vigor
Icon Companion Goat
[Goat]
Defense
Utility
+6,000/10,000/15,000 Maximum Hit Points
+1.5%/2.5%/3.75% Deflect Chance
+300/500/750 Combined Rating
Goat's Instincts
Noicon
[Gromph Baenre]
Offense
+3.75%/5.5%/7.5% Critical Strike
+375/550/750 Combined Rating
Gromph's Confidence
Icon Companion Grung
[Grung]
Offense
10% chance, on critical hit, to poison target for 112/165/225 magnitude damage over 10 seconds.
+375/550/750 Combined Rating
Grung's Instincts
Icon Companion Hellhound
[Hell Hound]
Utility
Increases the drop of Family Crests and Chaotic Writings in Vallenhas by 10%.
+375/550/750 Combined Rating
Hell Hound's Senses
Companion Honey Badger
[Honey Badger]
Defense
Utility
Damage taken reduced by 3%/5%/7.5% when your HP is below 20%.
+300/500/750 Combined Rating
Honeybadger's Instincts
Icon Companion Huntingdrake
[Hunting Drake]
Defense
+7,500/11,000/15,000 Maximum Hit Points
+1.88%/2.75%/3.75% Accuracy
+375/550/750 Combined Rating
Hunting Drake's Presence
Icons Inventory Misc Gemstone Dodecahedron 04
[Icosahedron Ioun Stone]
Utility
+3%/5%/7.5% Movement Speed
+300/500/750 Combined Rating
Icosahedron Stone's Insight
Icon Companion Fiendish Charmer Incubus
[Incubus]
Offense
+300/500/750 Combined Rating
10% chance, on Encounter use, to Daze your foe for 3 seconds. This effect may occur once every 10 seconds
Fiendish Charmer's Distraction
Icon Companion Chult Gorilla
[Infant Gorilla]
Offense
Utility
+1.5%/2.5%/3.75% Deflect Chance
+1.5%/2.5%/3.75% Critical Severity
+300/500/750 Combined Rating
Baby Gorilla's Instincts
Icons Inventory Misc Gemstone Iounstonemight 02
[Ioun Stone of Might]
Defense
Utility
+1.5%/2.5%/3.75% Deflect Chance
+1.5%/2.5%/3.75% Power
+300/500/750 Combined Rating
Mighty Insight
Icons Companion Irongolem
[Iron Golem]
Defense
Utility
+7,500/11,000/15,000 Maximum Hit Points
+1.88%/2.75%/3.75% Defense
+375/550/750 Combined Rating
Iron Golem's Presence
Icon Companion Dancer Lliira
[Joy Dancer of Lliira]
Defense
Offense
Utility
+1.5%/2.5%/3.75% Outgoing Healing Bonus
+1.5%/2.5%/3.75% Incoming Healing Bonus
+300/500/750 Combined Rating
Dance of Joy
Misc Bones Skull 01
[Laughing Skull]
Defense
Offense
+1.5%/2.5%/3.75% Combat Advantage
+1.5%/2.5%/3.75% Defense
+300/500/750 Combined Rating
Cryptic Insight
Icon Companion Lich
[Lich]
Defense
+300/500/750 Combined Rating
Reduces incoming damage by 3%/5%/7.5%.
Undying Overlord
Icons Inventory Misc Instruments Harp Lillend
[Lillend]
Utility
+300/500/750 Combined Rating
20% chance, on daily use, to heal nearby friends for 30%/50%/75% of their maximum hit points. Cooldown 30 seconds.
Lillend's Insight
LIttle White
[Little White]
Utility
+1.25%/1.83%/2.5% Incoming Healing Bonus
+1.25%/1.83%/2.5% Critical Avoidance
+1.25%/1.83%/2.5% Movement Speed.
This effect is doubled in the Underdark.
375/550/750 Combined Rating
Phasespider's Instincts
Icon Companion Hollyphant
[Lulu the Hollyphant]
Defense
+300/500/750 Combined Rating
When you use a Daily power, increase your damage resistance by 1.5%/2.5%/3.75% for 10 seconds, and heal yourself for 3%/5%/7.5% of your maximum hit points. Cooldown 30 seconds.
Hollyphant's Guidance
Icon Companion Mageslayer 01
[Mage Slayer]
Utility
300/500/750 Combined Rating
Doubles drop rate of Portal Stones in the River District.
Increase damage against the minions of Kabal, Gyrion, and Nostura by 4.5%/7.5%/11.25%.
Mageslayer's Assault
Icon Companion Makos
[Makos]
Defense
+1.5%/2.5%/3.75% Defense
+1.5%/2.5%/3.75% Deflect
+300/500/750 Combined Rating
Makos' Wisdom
Icons Companion Manticore 01
[Manticore]
Utility
10% chance, on critical hit, to knock down your target and do 75/110/150 magnitude damage.
+375/550/750 Combined Rating
Manticore's Presence
Icon Companion Minsc
[Minsc]
Defense
+375/550/750 Combined Rating
2.81%-5.81%/4.13%-7.13%/5.63%-8.63% damage versus strong enemies. The more dangerous the foe, the more damage is dealt.
The Bigger They Are
Icon Companion Myconid
[Myconid]
Defense
+1.5%/2.5%/3.75% Critical Avoidance
+300/500/750 Combined Rating
+1.5%/2.5%/3.75% Awareness
Myconid's Presence
Icons Inventory Misc Torch Phoera 03
[Mystic Phoera]
Defense
Utility
After being revived, add 1.88%/2.75%/3.75% Accuracy and Combat Advantage for 10 seconds.
+375/550/750 Combined Rating
Mystic Phoera's Presence
Icon Companion Neverwinter Knight
[Neverwinter Knight]
Offense
+375/550/750 Combined Rating
Increase your outgoing damage by 3.75%/5.5%/7.5%.
Neverwinter Knight's Discipline
Icons Companion Owl
[Owl]
Defense
Utility
+6,000/10,000/15,000 Maximum Hit Points
+300/500/750 Combined Rating
+1.5%/2.5%/3.75% Awareness
Owl's Instincts
Companion Baby Owl
[Owlbear Cub]
Utility
If you fail to critically hit, you have a 10% chance to do an additional hit for 75/110/150 magnitude damage.
+375/550/750 Combined Rating
Baby Owlbear's Presence
Noicon
[Panda]
Offense
+1.25%/1.83%/2.5% Critical Chance
+1.25%/1.83%/2.5% Forte
+1.25%/1.83%/2.5% Accuracy
375/550/750 Combined Rating
Panda's Prowess
Companion Panther
[Panther]
Offense
+300/500/750 Combined Rating
Increases the power of your At-Will attacks against Rooted targets by 4.5%/7.5%/11.25%.
Panther's Instincts
Icon Companion Paranoiddelusion
[Paranoid Delusion]
Offense
+300/500/750 Combined Rating
Increases At-Will damage against Disabled, or Held targets by 4.5%/7.5%/11.25%.
Delusional Insight
Icons Inventory Misc Torch Phoera 02
[Phoera]
Utility
After being revived, increase Defense and Critical Avoidance by 0.75%/1.25%/1.88%/2.75%/3.75% for 20 seconds.
+150/250/375/550/750 Combined Rating
Phoera's Presence
Companion Baby Polarbear
[Polar Bear Cub]
Defense
Utility
+1.5%/2.5%/3.75% Outgoing Healing Bonus
+1.5%/2.5%/3.75% Defense
+300/500/750 Combined Rating
Baby Polar Bear's Instincts
Icons Inventory Misc Orb Dragon Pseudo 01
[Pseudodragon]
Utility
+150/250/375/550/750 Combined Rating
10% chance on using an At-Will power to restore 1.5%/2.5%/3.75%/5.5%/7.5% of Max Stamina.
Pseudodragon's Presence
Icon Companion Twigblight
[Razorwood]
Offense
+1.5%/2.5%/3.75% Accuracy
+1.5%/2.5%/3.75% Critical Severity
+300/500/750 Combined Rating
Twigblight's Insight
Icons Companion Redcappowerie
[Redcap Powrie]
Defense
Offense
+1.5%/2.5%/3.75% Critical Severity
+1.5%/2.5%/3.75% Critical Avoidance
+300/500/750 Combined Rating
Redcap's Wisdom
Icon Companion Regis
[Regis]
Defense
+1.5%/2.5%/3.75% Deflect Chance.
+1.5%/2.5%/3.75% Deflect Severity.
+300/500/750 Combined Rating

Each equipped Companion of the Hall player bonus increases the non combined rating bonuses by 25% of their own bonus.
Regis's Reflexes
Icons Companion Remorhaz 01
[Remorhaz]
Offense
+375/550/750 Combined Rating
When you attack, your opponent has a 5% chance to combust, doing 75/110/150 magnitude damage, as fire, over for 5 seconds.
Remorhaz's Presence
Icons Inventory Rustmonster
[Rust Monster]
Defense
+375/550/750 Combined Rating
10% chance, on Encounter use, to reduce your target's Critical Severity by -3.75%/5.5%/7.5%. Stacks up to 3 times.
Rustmonster's Presence
Icon Companion Allosaur
[Savage Allosaur]
Defense
Utility
+7,500/11,000/15,000 Maximum Hit Points
+1.88%/2.75%/3.75% Critical Chance
+375/550/750 Combined Rating
Allosaur's Instincts
Noicon
[Scorcher]
Defense
Utility
+1.9%/2.8%/3.8% Deflect Chance
+1.9%/2.8%/3.8% Accuracy
+375/550/750 Combined Rating
Sun's Insight
Icons Companion SergeantKnox
[Sergeant Knox]
Defense
+1.5%/2.5%/3.75% Defense
+1.5%/2.5%/3.75% Accuracy
+300/500/750 Combined Rating
Sergeant Knox's Wisdom
Icon Companion Shadar-kai Witch
[Shadar-kai Witch]
Utility
Increases the drop of campaign currencies in the Dragonbone Vale campaign by 10%.
+1.5%/2.5%/3.75% Power
+1.5%/2.5%/3.75% Critical Chance.
+300/500/750 Combined Rating
Sense Through the Shadowfell
Icons Companion Shadowdemon
[Shadow Demon]
Utility
A Deflection does almost no damage and does 7.5%/12.5%/18.75%/27.5%/37.5% damage to the source of the deflected attack once every 30 seconds.

This cooldown on this effect is reduced to 20 seconds while under the effect of Underdark Mount & Companion Affinity.
+150/250/375/550/750 Combined Rating
Shadow Demon's Presence
Shadow Elemental
[Shadow Elemental]
Offense
+300/500/750 Combined Rating
On attack, you have a 10% chance to strike your target with additional force, doing 45/75/112.5 magnitude damage.
Shadow Force
Icons Companion Wintercelebrant 01
[Simril's Holiday Helper]
?
+300/500/750 Combined Rating
Icon Companion Skyblazer
[Skyblazer]
Utility
Increases the drop of Blood War Campaign Currencies by 10%.
+300/500/750 Combined Rating
Skyblazer's Sight
Icons Companion SnowLeopard
[Snow Leopard]
Offense
10% chance, on critical hit, to cause target to bleed for 60/100/150 magnitude damage over 10 seconds.
+300/500/750 Combined Rating
Snow Leopard's Instincts
Noicon
[Soradiel]
Defense
+1.5%/2.5%/3.75% Critical Chance
+1.5%/2.5%/3.75% Critical Severity
+300/500/750 Combined Rating
Divine Judgement
Icon M19 Companion Spineddevil
[Spined Devil]
Offense
+300/500/750 Combined Rating
10% chance, on Encounter use, to release a hail of spines at up to 6 foes within 15' for Magnitude 30/50/75 magnitude damage as Physical damage.
Spined Devil's Influence
Icons Inventory Misc Trinket Sprite 01
[Sprite]
Defense
Offense
+1.5%/2.5%/3.75% Accuracy
+1.5%/2.5%/3.75% Critical Avoidance
+300/500/750 Combined Rating
Sprite's Insight
Icon Companion Goldenlion 01
[Stalwart Golden Lion]
Utility
50% chance, on companion power use, to apply a stack of Celestial Lion's Presence to you. This effect may only occur once every 15 seconds.

Celestial Lion's Presence grants 3.75%/5.5%/7.5% additional damage as radiant damage for 10 seconds.
+375/550/750 Combined Rating
Celestial Lion's Presence
Icon Companion Stronghold Cleric
[Stronghold's Cleric]
Utility
+10% Stronghold Influence Gained
+375/550/750 Combined Rating
Stronghold Cleric's Wisdom
Icon Companion Fiendish Charmer Succubus
[Succubus]
Offense
+300/500/750 Combined Rating
10% chance, on Enconter use, to Daze your foe for 3 seconds. This effect may occur once every 10 seconds.
Fiendish Charmer's Distraction
Icons Inventory Misc Trinket Sylph 01
[Sylph]
Defense
+1.5%/2.5%/3.75% Critical Chance
+300/500/750 Combined Rating
+1.5%/2.5%/3.75% Awareness
Sylph's Insight
Icon Companion Raptor
[Tamed Velociraptor]
Offense
You are Part of the Pack.
You and any allies that are Part of the Pack gain 1.88%/2.75%/3.75% power.
This effect may stack up to 5 times.
+375/550/750 Combined Rating
Raptor's Instincts
Icon Companion Trobriandsconstruct
[Trobriand's Construct]
Defense
Your Critical Avoidance and Deflect is increased by 1.5%/2.5%/3.75% for 10 seconds when you enter combat.
+300/500/750 Combined Rating
Construct's Instincts
Icon Companion Tutor
[Tutor]
Offense
On combat start, your Critical Severity is increased by 1.5%/2.5%/3.75% and your Combat Advantage is increased by 1.5%/2.5%/3.75% for 10 seconds.
+150/300/500/750 Combined Rating
Tutor's Discipline
Icons Inventory Misc Whistle Direwolf 04
[Vicious Dire Wolf]
Utility
+300/500/750 Combined Rating
10% chance, on power use, to interrupt your target and do additional damage equal to 60/100/150 magnitude damage.
Vicious Direwolf's Presence
Icons Companion Vistani
[Vistani Wanderer]
Utility
Increases the drop of Barovian Coins, Omens, and Gold by 3.75%/5.5%/7.5%.
+375/550/750 Combined Rating
Vistani's Discipline
Icon Companion MoltenGalebDur
[Volcanic Galeb Duhr]
Offense
+375/550/750 Combined Rating
Deal up to 3.75%/5.5%/7.5% more damage with encounter powers based on the percentage of your remaining health.
Volcanic Galeb Duhr's Presence
Icon Companion Archon Water
[Water Archon]
Offense
Utility
+300/500/750 Combined Rating
10% chance when attacking a target at full health to increase your power by 3%/5%/7.5% for 10 seconds.
Each additional equipped Archon player bonus increases this bonus by one quarter of their own bonus.
Water Archon's Insight
Icon Companion Gargoyle Aug
[Watler]
Utility
+3.75%/5.5%/7.5% Deflect
+10% damage in Day of the Dungeon Master maps
+375/550/750 Combined Rating
Watler's Presence
Icon Companion Intern Undead
[Wiggins the Undead Intern]
Utility
When in combat for longer than 30 seconds, your Power and Defense are increased by 1.5%/2.5%/3.75% . Increases the drop of Time Cards and IOUs by 10%.
+300/500/750 Combined Rating
Wiggin's Wisdom
Icons Companion Willowisp
[Will-O'-Wisp]
Defense
Offense
+1.5%/2.5%/3.75% Critical Severity
+300/500/750 Combined Rating
+1.5%/2.5%/3.75% Awareness
Willowisp's Insight
Icon Companion Wulfgar
[Wulfgar]
Offense
+1.5%/2.5%/3.75% Combat Advantage.
+1.5%/2.5%/3.75% Accuracy
+300/500/750 Combined Rating

Each equipped Companion of the Hall player bonus increases the non combined rating bonuses by 25% of their own bonus.
Wulfgar's Wrecking
Icons Companion Xuna
[Xuna]
Offense
+300/500/750 Combined Rating
10% chance, on At-Will use, to poison target for 60/100/150 magnitude damage.
Xuna's Wisdom
Icon Companion Lunar Yojimbo
[Yojimbo]
Defense
Increases deflect chance by 3%/5%/7.5%.
Whenever you take damage, your power is increased by 3%/5%/7.5% and your deflect chance is reduced by 3%/5%/7.5% for 10 seconds.
+300/500/750 Combined Rating
Yojimbo's Discipline
Icon M19 Companion Zariel Redeemed
[Zariel]
Defense
+1.5%/2.5%/3.75% Critical Chance
+1.5%/2.5%/3.75% Critical Severity
+300/500/750 Combined Rating
Divine Judgement
Icons Companion SergeantKnox
[Alphonse Knox]
Offense
+2.75%/3.75% Critical Severity
+2.75%/3.75% Combat Advantage
+550/750 Combined Rating
Alphonse Knox's Discipline
Icon Companion Corbin
[Corbin the Venerated]
Utility
500/750 Combined Rating
10% chance, on Encounter use, to increase Recharge Speed by 7.5%/11.25% for 10 seconds.
Corbin's Confidence
Noicon
[Bobby the Barbarian]
Defense
Utility
+750 Combined Rating
+12,000 Maximum Hit Points
+4.5% Defense
Bobby's Vigor
Icon Companion Elminster
[Elminster Aumar]
Defense
When you take damage while below 50% Health you will be shielded for 15% of your max hit points. Can only be applied once every 45 seconds.
+750 Combined Rating
Effulgent Epuration
Noicon
[Flumph]
Defense
Once every 30 seconds upon taking damage, reflect 5.7% damage back to the attacker, up to 50,000 damage.
Once every 30 seconds upon receiving healing, restore an additional 5% maximum health. If at full health, the heal becomes a shield instead.
+750 Combined Rating
Intelligent & Wise
Icon Companion Baby Bulette Gold
[Golden Bulette Pup]
Defense
Offense
Utility
+7.5% Outgoing Healing Bonus
750 Combined Rating
Golden Bulette Pup's Presence
Icon Companion Cat Gold
[Golden Cat]
Defense
Utility
Offense
+7.5% Combat Advantage
+750 Combined Rating
Golden Cat's Instincts
Icons Companion DeepcrowHatchling Gold
[Golden Deep Crow Egg]
Defense
Offense
Utility
+7.5% Awareness
+750 Combined Rating
Golden Deep Crow's Presence
Icon Companion Goat Gold
[Golden Goat]
Defense
Utility
Offense
+750 Combined Rating
+7.5% Forte
Golden Goat's Instincts
Icon Companion Jarlaxle
[Jarlaxle Baenre]
Offense
+7.5% Accuracy
750 Combined Rating
Maestro's Observation
Noicon
[Kavatos Stormeye]
Defense
+3.8% Critical Chance
+3.8% Forte
+750 Combined Rating
Storm Eyes
Icon Companion Lich Makos
[Lich Makos]
Offense
10% chance on hit to deal 90 magnitude psychic damage to the target and heal the player for 5% of their maximum hitpoints.
+750 Combined Rating
Consume Soul
Icon Companion Linu
[Linu La'neral]
Utility
+3.75% Forte
+3.75% Outgoing Healing Bonus
750 Combined Rating
Divine Answers
Icon Companion Rumpadump
[Rumpadump]
Offense
+750 Combined Rating
10% chance, on Encounter use, to increase your critical strike and critical severity by 9.38% for 6 seconds. Can only trigger once per 15 seconds.
Invigorating Spores
Icon Companion Genasi
[Windsoul Genasi]
Offense
+3.75% Deflect Chance
+750 Combined Rating
+3.75% Combat Advantage
Windsoul Genasi's Gale
Noicon
[Xaryxian Defector]
Offense
+750 Combined Rating
+4.5% Critical Strike
+3% Critical Severity
Xaryxian Precision
Icon M19 Companion Zariel Redeemed
[Zariel the Redeemed]
Defense
+3.75% Critical Chance
+3.75% Critical Severity
750 Combined Rating
Divine Judgement

Value Changes[]

It seems at some point between August 5th and November 8th 2022 (maybe with Northdark Reaches) most values were changed. I can't find any announcement or patch notes or any mention of that anywhere but they are definitely different. This table shows the changes to the value progressions. I am not yet updating all of the player bonus descriptions.
As you can see, all values changed except those for mythic quality. Generally, you get the new values from the old by multiplying common by 15, uncommon by 3, rare by 5/3, epic by 1.25 and legendary by 1.1. (That is probably because really only the item level changed and that changes all connected values accordingly.)

old value progression new value progression affected companions
A
Combined Rating
same as item level
5/50/150/300/500/750 75/150/250/375/550/750 all
B
1/200 of item level
(half of C)
0.03%/0.25%/0.75%/1.5%/2.5%/3.75% 0.375%/0.75%/1.25%/1.875%/2.75%/3.75%
shows up as
0.38%/0.75%/1.3%/1.9% or 1.88%/2.8%/3.8%
most

(Icons Companion Cockatrice[Cockatrice] has the same values but as magnitude damage, not % bonus)

C
1/100 of item level
(double B)
(similar to A)
0.5%/1.5%/3%/5%/7.5% 1.5%/2.5%/3.75%/5.5%/7.5%
shows up as
1.5%/2.5%/3.8%/5.5%/7.5%
many
D
Maximum Hit Points
20 times item level
100/1,000/3,000/6,000/10,000/15,000 1,500/3,000/5,000/7,500/11,000/15,000 many
E
Maximum Hit Points
40 times item level
(double D)
12,000/20,000/30,000 15,000/22,000/30,000 Icon Companion XegYi 01[Energon]
F
Maximum Hit Points
40/3 times item level
(1/3 E)
667/2,000/4,000/6,667/10,000 2,000/3,333/5,000/7,333/10,000 Event Simril Refinement R4 Gold[Star of Simril]
G
Magnitude Damage
1/5 item level
10/30/60/100/150 30/50/75/110/150 Icon Companion Slaad Blue[Death Slaad], Icon Companion Baby Rat[Rat Pup], Companion Tomb Spider[Tomb Spider], Icons Misc Collar Boar War[War Boar], Icons Companion Manticore 01[Manticore], Companion Baby Owl[Owlbear Cub], Icons Companion Remorhaz 01[Remorhaz], Icons Companion SnowLeopard[Snow Leopard], Icons Inventory Misc Whistle Direwolf 04[Vicious Dire Wolf], Icons Companion Xuna[Xuna]
H
Magnitude Damage
1/10 item level
(similar to C)
(half of G)
15/30/50/75 25/37.5/55/75
may show up as
25/38/55/75
Companion Wererat Thief[Wererat Thief], Icon M19 Companion Spineddevil[Spined Devil]
I
Magnitude Damage
3/20 times item level
(3/4 of G)
(similar to 30 times B)
0.75/7.5/22.5/45/75/112.5 11.25/22.5/37.5/56.25/82.5/112.5
shows up as
11/22/38/56/82/112
Icons Companion Half-elfconartist 01[Con Artist], Icons Inventory Misc Contract Aranea 01[Aranea], Icon Companion Scorpion Black[Black Death Scorpion], Shadow Elemental[Shadow Elemental]
J
Magnitude Damage
3/10 times item level
(double I)
90/150/225 probably 112.5/165/225
shows up as
112/?/?
Icon Companion Grung[Grung]
U
Magnitude Damage
3/25 times item level?
/ shows up as
90
Icon Companion Lich Makos[Lich Makos]
K
often damage versus
3/200 times item level
(three times B)
(similar to I)
0.75%/2.25%/4.5%/7.5%/11.25% 2.25%/3.75%/5.625%/8.25%/11.25%
shows up as
2.3% or 2.25%/3.8%/5.6% or 5.63%/8.3% or 8.25%/11%
Icon Companion Batiri[Batiri], Icons Inventory Misc Contract Coldironwarrior 01[Cold Iron Warrior], Companion Panther[Panther], Icons Companion Siegemaster[Siege Master], Icons Inventory Misc Contract WildHuntRider 01[Wild Hunt Rider], Icon Companion Yethhound 01[Yeth Hound], Companion Slyblade Kobold[Slyblade Kobold], Icons Companion Chicken[Chicken], Icon Companion Mageslayer 01[Mage Slayer], Icon Companion Paranoiddelusion[Paranoid Delusion], Icon Companion Corbin[Corbin the Venerated], Noicon[Erinyes of Avernus], Icon Companion Dragonhunter[Dragon Hunter], Icon Companion Baby Winterfox[Winter Fox]
L
3/400 times item level
(half of K)
0.375%/1.125%/2.25%/3.75%/5.625% 1.125%/1.875%/2.8125%/4.125%/5.625%
shows up as
1.1% or 1.13%/1.9%/2.8% or 2.81%/4.1%/5.6%
Companion Baby Brownbear[Bear Cub], Icon Companion Fireeye 01[Blue Fire Eye], Icon Companion Kuotoa[Kuo-toa], Icon Companion Baby Winterfox[Winter Fox], Icons Companion Yeti[Young Yeti], Icon Companion Chult Tiger[Chultan Tiger], Icon Companion Minsc[Minsc] (Minsc uses this progression as is and with plus 3 to every value.)
M
1/50 item level
(double C)
(similar to G)
3%/6%/10%/15% 5%/7.5%/11%/15% Icons Companion DreadWarriorRevenant[Dread Warrior], Icon M19 Companion Abyssal Chicken[Abyssal Chicken], Companion Angel of Protection[Angel of Protection], Icon Companion Celeste[Celeste], Icon Companion Eladrin[Eladrin], Icon Companion Elminster[Elminster Aumar]
N
1/300 item level
(1/6 of M)
0.17%/0.5%/1%/1.67%/2.5% 0.5%/0.8p3%/1.25%/1.8p3%/2.5%
shows up as
0.5%/0.83%/1.3% or 1.25%/1.8%/2.5%
Event Simril Refinement R4 Gold[Star of Simril], Companion Neverember Guard[Vallenhas Elite Soldier], LIttle White[Little White], Noicon[Etrien], Noicon[Panda]
O
3/100 item level
(3 times C)

(double K)

4.5%/9%/15%/22.5% 4.5%/7.5%/11.25%/16.5%/22.5%
shows up as
4.5%/7.5%/11%/16%/22%
Companion Neverember Guard[Vallenhas Elite Soldier], Icons Companion BlackIceIounStone[Black Ice Ioun Stone], Companion Baby Bulette[Bulette Pup]
P
1/10 item level
(10 times C)
5%/15%/30%/50%/75% 15%/25%/37.5%/55%/75%
shows up as
15%/25%/38%/55%/75%
Icons Companion RenegadeEvoker[Renegade Evoker], Icons Inventory Misc Instruments Harp Lillend[Lillend]
Q
1/150 item level
(1/3 of M)
0.33%/1%/2%/3.33%/5% 1%/1.p6%/2.5%/3.p6%/5%
shows up as
1%/1.7%/2.5%/3.7%/5%
Noicon[Flumph], Event Simril Refinement R4 Gold[Star of Simril], Icon Companion Lich Makos[Lich Makos]
R
1/250 item level
(1/5 of M)
0.6%/1.2%/2%/3% probably 1%/1.5%/2.2%/3% Icon Companion Greenscale Hunter[Greenscale Bowman]
S
1/75 item level
(double of Q)
4%/6.67%/10% probably 5%/7.p3%/10% Icon Companion Baby Butterfly[Butterfly]
T
1/20 item level
(10 times B)
2.5%/7.5%/15%/25%/37.5% probably 7.5%/12.5%/18.75%/27.5%/37.5% Icons Companion Shadowdemon[Shadow Demon]
V
1/80 item level?
/ shows up as
9.38%
Icon Companion Rumpadump[Rumpadump]
W
1/30 item level
(10 times N)
probably 12.5%/18.p3%/25%
shows up as
12%/18%/25%
Icon Companion Kobold Summer[Fireblossom Zealot]
X
cannot be calculated by any rational number times item level
(previously 2/50 item level?)
2/50 il would be 6%/10%/15%/22%/30%
shows up as
7%/11%/16%/22%/27%
Companion Wayward Wizard[Halfling Wayward Wizard]
Y
cannot be calculated by any rational number times item level

(previously 11/500 item level?)

3.6%/6.6%/11%/16.5% 11/500 il would be 5.5%/8.25%/12.10%/16.5%
shows up as
5.9%/8.6%/12%/16%
Companion Wererat Thief[Wererat Thief]
Z
(could be a typo and it's actually 7.5%? or it's the L progression rounded up? or they just made up a new thing)
shows up as
5.7%%
Noicon[Flumph]

Note: The non-rounded values are the ones that calculate from the item level, however I'm not actually sure if the game internally uses those exact values and only rounds them for the tooltips, or uses rounded values.
Rounding is generally confusing, I think they round every value to a number with only two digits, not counting zeros in front, meaning it's not all to the same amount of decimal spaces. (for example 0.375 rounds to 0.38 which is two decimal spaces but 3.75 rounds to 3.8 which is one) If the value already has two or more digits before the decimal point, it gets rounded to zero decimal spaces. In that instance .5 seems to sometimes be rounded up and other times down, even though mathematical convention is to round up and Neverwinter follows that in all decimal spaces but the first. (for example 22.5 rounds to 22 but 2.25 rounds to 2.3) Progressions that are rounded incorrectly that way are I, J, O, and W.
And then there are the few singular values that show up in different versions, one following the system of the other rounded values, the other being more exact. (for example 2.8125 sometimes shows up as 2.8 and sometimes as 2.81 depending on companion)

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