Concussive Cone

Wave after wave of concussive force echoes out from you, audible out to a mile. Each creature in a 30-foot cone must make a Constitution saving throw. On a failed save, a creature takes 6d8 thunder damage and is pushed 10 feet away from you. On a successful save, the creature takes half as much damage and isn't pushed.

In addition, unsecured objects that are completely within the area of effect are automatically pushed 10 feet away from you by the spell's effect.

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.