Lost in the Wilderness
The Lost Realm#51 (x1)
Encounter-Side-Quest
(4)

You've lost your way in the vastness of Arnor. You must search around until you find your trail again.

When Revealed: Each player places all cards in his hand facedown underneath Lost in the Wilderness.

Forced: When Lost in the Wilderness is defeated, return each card underneath it to its owner's hand.