Cruel Moon

A pale silvery beam streaks from your pointing finger to a point you choose within range and then blossoms, with a soft otherworldly chime, into an explosion of spectral flame. Each creature in a 20-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 6d6 radiant damage and 2d6 fire 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 4th level or higher, the damages are increased by 1d6 each for each slot level above 3rd.