Levinson casts wall of fire running down the hall from the top of the stairs back, oriented so the hot side radiates toward the Morays and priestesses....
Wall of fire deals 2d4 ⇒ (4, 3) = 7 fire damage to all Morays and priestesses within 10 feet (currently all but 5 of the Morays), and 1d4 ⇒ 3 fire damage to all within 20 feet (the 5 Morays closest to the east wall of the hallway)....