Dawn's Retribution

You raise your fist towards the sky and your eyes glares at the creature that just damaged you.  This foe is momentarily striked by holy flames from heaven. The creature must make a Dexterity saving throw. It takes 2d10 radiant damage on a failed save, or half as much damage on a successful one. Fiends and undeads creatures have disadvantages on this saving throw.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d10 for each slot level above 3th.