Captured Tower
Wrath and Ruin #18 (x2/x1)
Ort
4 (4)
City.  

While Captured Tower is the active location, encounter card effects cannot be canceled.

Forced: After a player takes control of Captured Tower, he shuffles the encounter discard pile into the encounter deck and discards cards from the top until he discards an enemy and puts that enemy into play engaged with him.