Divine Lightning

You form a bolt of holy lightning in your grasp, and use it to smite targets with divine power. Choose one creature within range. The target must make a dexterity saving throw. On a failed save they take 4d8 lightning damage and 4d8 radiant damage, and they are knocked prone.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the lightning or radiant damage (your choice) increase by 1d8 for each slot level above 4th.