Initiation Time: 1 action
Range: 60 feet
Duration: 1 round
A sudden burst of powerful thunder erupts from a point you choose within range. Each creature in a 10-foot-radius sphere centered on that point must make a Constitution saving throw. On a failed save, a target takes 8d6 thunder damage and is deafened for the duration. On a successful save, a creature takes half as much damage and isn't deafened. A creature made of inorganic material such as stone, crystal, or metal has disadvantage on this saving throw.
A nonmagical object that isn't being worn or carried also takes the damage if it's in the form's area.
At Higher Levels. When you initiate this form at a higher level, the damage increases by 1d6 for each level above 3rd.