Unseen Danger
The Wilds of Rhovanion #36 (x2/x1)
Treachery

When Revealed: Each player removes a character he controls from the quest and discards the top card of the encounter deck. If the discarded card's printedThreat is greater than the removed character'sWillpower discard that character.

Shadow: Attacking enemy gets +2 Attack and +2 Defense if it is guarding a card.