Concuss

This Spell is a Rare Spell this type of spell you need to find or unlock from a spell scroll or some other Source(optional rule)

The caster claps, sending out a concussive wave of raw psionics. Creatures in the path of the wave must make a Dexterity saving throw. On a failed save, the target is knocked prone, takes 7d4 psychic damage, and also ignores damage immunities of constructs, the target is also deafened for 1 minute. On a successful save, Those who succeed are not knocked prone, are not deafened, and take half the damage.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the psychic damage increases by 3d4 for each slot above 2nd.