Lockbox

Lockboxes are containers that drop randomly from foes throughout the game. They are also purchasable from the Wondrous Bazaar for 200. Lockboxes can only be opened with, which can be bought from the Zen Market. Lockboxes contain and various potential prizes, including mounts, companions, and artifacts. Whenever a player receives a major prize from a lockbox, a message is broadcast across the server announcing the prize.

When a new type of lockbox is introduced, the previous type ceases to drop from foes, and is no longer purchasable from the Wondrous Bazaar. However, lockboxes that players have already collected are not removed, and can still be opened or traded.

Lockbox Resurgence
A Lockbox Resurgence is a period of time during which retired lockboxes drop alongside the current lockbox.

Event Boxes
The Tymora's Gift, Coins of Waukeen and Challenge of the Gods events feature boxes that drop from random enemies but do not require to open. These are, and  respectively. The can be traded for  and, which are also categorized as lockboxes, but also do not require keys.