You cause the earth around you to become soft clay which rises and assaults an area within range. Each creature in a 10-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 6d8 bludgeoning damage on a failed save, or half as much damage on a successful one.

The clay creates difficult terrain in the area of the spell.

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