Thunderous Shockwave

You strike the drum, releasing a shockwave of thunderous energy toward a point within range. Each creature in a 20-foot radius sphere centered on that point must make a Constitution saving throw. On a failed save, a creature takes 4d6 thunder damage, is pushed 15 feet away from the center of the sphere, and is deafened for 1 minute. If a creature collides with a solid surface as a result of being pushed, it is also knocked prone. On a successful save, the creature takes half damage and is not pushed, deafened, or knocked prone.

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