You push all the air out of a 20ft radius sphere that surrounds you, forming a bubble of pure vacuum. This bubble follows you as you move. Creatures are silent, deafened, and suffocating within the sphere. Any spells that require verbal components are impossible to perform while in the sphere. Thunder damage can not be dealt to any creature in the sphere.
When the spell ends, a pressure wave of air comes crashing down on the entire area. Each creature in the area must make a Strength Saving throw, taking 6d10 bludgeoning damage and being knocked prone on a failure. On a success, they take half as much and aren't knocked prone. If the spell was ended voluntarily by the caster on their turn, the caster automatically succeeds their saving throw.
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