Earth Rupture

An earthworm launches from your finger to a location that you can see within range. As the earthworm travels it begins to fill with arcane energy and erupts with force, sending mud and rocks flying in all directions. Each creature in a 20-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 damage can be blocked by full cover and the ground where the spell was cast becomes difficult terrain.

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.