Arctic Vengence

You cause the moisture in the ground within a 30-foot radius centered on a point you choose to freeze rapidly into permafrost. The frozen ground then violently bursts, flinging dangerous ice shards and small stones throughout the area, transforming the ground into difficult terrain.

Each creature in the affected area must make a Dexterity saving throw. On a failed save, the shards and stones deal 5d6 cold damage and 5d6 bludgeoning damage. On a successful save, they take half as much damage.

At higher levels
When you cast this spell using a spell slot of 5th level or higher, both the cold and bludgeoning damage increase by 1d6 for each level above 4th.