Avenging Light

You call down holy light on a creature you can see within range, which intensifies if your allies are injured. The target must succeed on a Dexterity saving throw or take 1d6 radiant damage. If the target is within 5 ft. of one or more of your allies who are missing any of their Hit Points, the target takes a further 1d4 radiant damage.

At Higher Levels. Both the damage dice increase when you reach 5th level (2d6 and 2d4), 11th level (3d6 and 3d4), and 17th level (4d6 and 4d4).