Island Watcher
Temple of the Deceived#76 (x2/x0)
Enemy
(46) 3 4 1 5
Undead.  
Island Watcher cannot be optionally engaged.

While Island Watcher is in the staging area, it gains: "Forced: At the beginning of the encounter phase, if the active location has the Ruins trait, Island Watcher engages the player with the highest treat. Then, deal it 2 shadow cards."