Thunderous Desolation

Air bursts with thunderous sound at four different points you can see within range. Each creature in a 40-foot-radius Sphere centered on each of those points makes a Constitution saving throw. A creature takes 20d6 Thunder damage and 20d6 Force damage on a failed save or half as much damage on a successful one. A creature in the area of more than one pressurized sphere is affected only once. A creature made of inorganic material such as stone, crystal, or metal has disadvantage on this saving throw.

Immediately after you cast this spell, a thunderous boom sounds that can be heard from up to 1200 feet away, A nonmagical object that isn't being worn or carried also takes the damage if it's in the spell's area.