Brightwood’s Arctic Explosion

A small piece of condensed ice flies toward a point within range before exploding in a flash of cold. Each creature in a 20-foot-radius sphere centered on that point must make a Constitution saving throw. On a failed save, a creature takes 6d8 cold damage and its speed is reduced to 0 until the end of its next turn. On a successful save, a creature takes half as much damage, and its speed is halved.

Any object within the radius is covered in frost, and is immediately frozen solid.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d8 for each slot level above 4th.