Level 7 evocation
Casting Time: 1 action
Components: V, S, R, M (item), C
Duration: Instantaneous
Range: 30 feet
You utter a divine word, imbued with the power that shaped the world at the dawn of creation. Each target must make a Charisma saving throw. On a failed save, a creature suffers an effect based on its current hit points:
50 hit points or fewer: deafened for 1 minute
30 hit points or fewer: blinded, deafened, and stunned for 1 hour
20 hit points or fewer: killed instantly
Regardless of its current hit points, a celestial, an elemental, a fey, or a fiend that fails its save is forced back to its plane of origin (if it isn't there already) and can't return to your current plane for 24 hours by any means short of a wish spell.