Thunder pulse

You gather sonic energy and can expel it in shockwaves for
the duration. Until the spell ends, you can use an action to
emit a shockwave in a 15-foot cone. Each creature in that
area must make a Constitution saving throw, taking 3d8
thunder damage and being knocked 10 feet away from you on
a failed save, or half as much damage and not being knocked
away on a successful one.
At Higher Levels. When you cast this spell using a spell
slot of 3rd level or higher, the damage increases by 1d8 for
each slot level above 2nd.