Aquatic Destruction

Water crashes towards the ground at four different points you can see within range. Each creature in a 40-foot-radius sphere centered on each point you choose must make a Strength saving throw. The sphere spreads around corners. A creature takes 20d6 lightning damage and 20d6 force damage on a failed save, or half as much damage on a successful one. A creature in the area of more than one wave burst is affected only once.