Chaos Storm

Create a 20-ft. radius storm of chaotic energy centered on a point within range. When a creature enters the area for the first time on a turn or starts its turn there, it must make a DEX save, taking 27 (6d8) variable damage on a failed save, or half as much on a success. Roll 1d8 each round to determine the damage type: acid, cold, fire, force, lightning, poison, psychic, or thunder.