Blistered Knight

Blistered Knights are enemies in the Ghosts of the Deep dungeon, found around the room in the Ecthar encounter. Defeating all three of them spawns a Keeper of the Deep ogre. Killing the ogre grants Deepsight, which reveals three symbols on the wall that must be memorized for the next phase.

The symbols are used in the underwater phase, where runes matching them must be activated above water to start the next phase. A Wellkeeper Knight that spawns during the shield phase must be killed so the shield around Ecthar can be broken.