Cain's Psionic Breath

A creature you touch is imbued with the power to spew psionic energy from your mouth. Until the spell ends, the target can use an action to exhale psionic energy in a 15-foot cone. Each creature in that area must make a Dexterity saving throw, taking 3d6 psychic damage on a failed save, or half as much damage on a successful one.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d6 for each slot level above 2nd and the cones area increases by 5ft