Peat Bog
The Nîn-in-Eilph Nightmare #5 (x4)
Location
3 (3)
Marsh.  

While Peat Bog is in the staging area, it gains:"Forced: After the players advance to a quest stage, each player discards 1 random card from his hand."

Dead grasses and rotting reeds loomed up in the mists like ragged shadows of long–forgotten summers.
–The Two Towers