Fire-filled Trench
The Flame of the West #48 (x3/x2)
Lieu
2 (3)

Forced: When a player plays an event that would cancel the effects of a treachery card just revealed from the encounter deck, cancel the effects of that event. Then, discard Fire-filled Trench.

...as the trenches were made each was filled with fire, though how it was kindled or fed, by art or devilry, none could see. –The Return of the King