Corona

With a word, you begin to glow with a circular aura of swirling radiance. Until the spell ends, you shed bright light in a 20-foot radius, and dim light for an additional 20 feet. In addition, when a creature ends its turn within 10 feet of you, you can force it to make a Constitution saving throw. The creature takes 4d6 radiant damage on a failed save, or half as much on a successful one.