History of Revenant Wizards

Revenant Wizards are enemies in the Pale Heart cave fight at the end of Alone in the Dark. Eliminating the wizards on the left and right sides of the cave activates three crystals. Shooting all three drops the boss's shields for 15 seconds, and the cycle repeats until the boss is defeated. Earlier in the quest the route runs through The Seclusion in the Pale Heart to reach Crow.