Crown's Radiance

You channel the radiant power within Luminastra's Brilliance, releasing a burst of intense light in a 15-foot cone. Each creature in that area must make a Dexterity saving throw. On a failed save, a creature takes 2d8 radiant damage, and it is momentarily blinded until the end of its next turn. On a successful save, a creature takes half as much damage and isn't blinded.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d8 for each slot level above 1st.