The Hordes of Angmar
The Siege of Annúminas #29 (x2)
Traîtrise

When Revealed: Each player must choose: either return the highestThreat enemy engaged with you to the staging area, or search the encounter deck and discard pile for an enemy and put it into play engaged with you.

Shadow: If this attack destroys a character, reveal the top card of the encounter deck.