Moonburst (5e Spell)
From D&D Wiki
|Casting time:||1 action|
A cold light flashes from your pointing finger to a point you choose within range then blossoms with a soundless radiance. Each creature in a 20-foot radius Sphere centered on that point must make a Dexterity saving throw. A target takes 8d6 radiant 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 adds 1d6 to damage.