Scavenging Stone-troll
Across the Ettenmoors Nightmare#4 (x2)
Enemy
(42) 1 7 2 14
Troll.  
You cannot travel to a safe location while Scavenging Stone-troll has no damage on it.

While Scavenging Stone-troll is in the staging area, cards in each player's discard pule cannot leave that discard pile.