Vault of Lights (Halls of Origination)

The Vault of Lights is a room in the Halls of Origination. After meeting with Brann Bronzebeard, players must defeat the Water Warden, Earth Warden, Air Warden, and Flame Warden to re-align a series of mirrors and open a door. Stone troggs have gotten into the area somehow. Anraphet walks out of the control room after the door is open, and proceeds to sterilize the stone troggs... and the players.