The Hornburg
The Treason of Saruman#37 (x3)
Location
3 (3)
While The Hornburg is the active location, reduce the archery total by 1 for each player in the game.

Forced: When The Hornburg is explored, assign X damage among characters in play. X is the number of enemies in play.

But the Hornburg still held fast, like an island in the sea. -The Two Towers