You slam your hands together, causing a blast of frigid energy to erupt in a 20 foot radius sphere around you. Creatures except you within range must make a Constitution saving throw. Targets take 8d6 cold damage on a failed save, or half as much on a successful one.

Any non-magical water in the radius is also frozen.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 3rd.