Cacophony of Thunder
8th-level evocation (Bard, Sorcerer, Wizard)
- Casting Time: 1 action
- Range: 150 feet
- Components: V, S, M (a tiny drum)
- Duration: Concentration, up to 1 minute
The air itself shimmers in disturbance as deafeningly loud rumblings fill a 50-foot cube centered on a point you can see. The affected area looks like a cube of slightly blurred atmosphere, shaking violently throughout its volume. From outside the cube, muffled explosions of noise can be heard, but inside the cube, creatures within are battered by thunderous clamor that shakes their very cores. When a creature enters or starts its turn within the cube, it must make a Constitution saving throw. On a failed save, it take 10d6 thunder damage and is deafened. On a successful save, it takes half damage and is deafened until the start of your next turn.
A creature that fails the initial saving throw must make a Constitution saving throw whenever it starts a turn. On a successful save, it is no longer deafened.