Siege Smithy

"When a Guild absolutely needs to fight another guild, you build a Siege Smithy to get an advantage. The Siege Smithy will unlock special abilities in the Stronghold Siege."

Siege Smithy
A Siege Smithy is a Stronghold structure that increases the effectiveness of your catapults in Stronghold Siege PvP battles, and unlocks the the Enhance Overload: Stamina Drain Ward Boon at Rank 3, and the Enhance Overload: PvP Ward Boon at Rank 5. A Siege Smithy may be built at any Support Structure plot.