Divine Radiance

You call upon a pillar of light to strike a target you can see within range. The target must succeed on a Dexterity saving throw or take 1d8 radiant damage. If you or an effect you created healed an ally this turn, it instead takes 1d12 damage.

The spell's damage increases by one die when you reach 5th level (2d8 or 2d12), 11th level (3d8 or 3d12), and 17th level (4d8 or 4d12).