Rescue from the Trolls
Across the Ettenmoors Nightmare #11 (x1)

When Revealed: Each player places the lowest-threat-cost hero he controls facedown underneath Rescue from the Trolls, out of play.

Response: After a Troll enemy is destroyed, place 3 progress on Rescue from the Trolls.

Forced: When Rescue from the Trolls is defeated, each player takes control of each of his heroes underneath it.