Aftershock

A violent tremor blasts out from you along the ground for 80 feet. Each creature touching the ground in the spell's area must make a Strength saving throw. On a failed save, the target takes 11d10 bludgeoning damage and is knocked prone. On a successful save, the target takes half the damage and is not knocked prone.

Creatures in the area that are underground or prone make their save at disadvantage. Structures and objects on the ground are damaged by this spell.

At Higher Levels. When you cast this spell using a spell slot of 8th level or higher, the damage increases by 2d10 for each slot level above 7th.