Black Ice Eruption

Choose a point you can see on the ground within range. Shards of jagged black ice erupt in a 20-foot cube centered on that point. Each creature in that area must make a Dexterity saving throw. A creature takes 3d8 bludgeoning damage and 1d6 cold on a failed save, or half as much damage on a successful one.

The area of affected ground becomes difficult terrain for 1 hour or until cleared. Each 5ft square of terrain requires 1 action to clear.

The user suffers 1d4 piercing damage from black ice exhaustion.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d8 and 1d6 for each slot level above 3rd.