A bright streak flashes from your pointing finger to a point you choose within range and then blossoms with a loud shatter into an explosion of ice. Each creature in a 20-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 8d6 cold damage on a failed save, or half as much damage on a successful one. Also on a failed save a target has to make a Constitution saving throw or it is frozen.

The ice spreads around corners. It freezes freezable objects in the area.

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.