Gate of Erebor
The Siege of Erebor #9 (x1)
Objective
The Siege of Erebor

Response: After an enemy enters this stage’s staging area, deal 1 damage to that enemy.

Response: When X damage would be dealt to Erebor deal X damage to 1 hero you control instead. Any player at this stage may trigger this effect.

In the end both King Brand and King Dáin Ironfoot were slain, and the Easterlings had the victory. But they could not take the Gate…
—The Return of the King