Dire Radiance

A burst of withering radiance blasts forth from your eyes and mouth, forming a 40-foot cone. Each creature in the cone must make a Dexterity saving throw. A creature takes 7d6 radiant damage on a failed save, or half as much on a successful save.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 3rd.