Concussion

A bright streak flashes from your pointing finger to a point you choose within range and then blossoms with a low roar into an explosion without flame. Each creature in a 20-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 8d6 force damage on a failed save, or half as much damage on a successful one. Those failing their save are also thrown 10' and knocked prone, directly away from the center of the blast.

The explosion spreads around corners.

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