Howling of Wargs
The Battle of Carn Dûm Nightmare #7 (x2)
Treachery

When Revealed: Either deal 1 shadow card to each enemy in the staging area, or search the encounter deck and discard pile for a side quest and add it to the staging area. Shuffle the encounter deck if it is searched.

Shadow: Deal 1 shadow card to each enemy engaged with you that has not attacked this phase.