Frightful Den
Escape from Khazad-dûm #22 (x1)
4 (4)

While Frightful Den is in the staging area, each Troll enemy gets -10 engagement cost.

Forced: When Frightful Den is explored, the opposing team searches the encounter deck and discard pile for a Troll enemy with cost 1 or less and adds it to the staging area. Shuffle the encounter deck.