Taldaline's Starburst

A bright eruption of light bursts from a point you choose within range and then erupts in a bright starlight. Each creature in a 10-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 4d8 fire damage on a failed save, or half as much damage on a successful one.

Additionally, each creature within 20 feet of that point must make a Constitution saving throw. A target that fails this save is blinded until the start of your next turn.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d8 for each slot level above 3rd.