Celestial Sigil

You trace a divine glyph in the air and direct its power toward a creature you can see within range. The target must succeed on a Charisma saving throw or take 1d8 radiant damage and begin to glow softly. The first time you or an ally attack the target before the end of your next turn, the target takes an additional 1d4 radiant damage from the attack if it hits. Then the spell ends.

The spell's initial and secondary damage both increase by one die when you reach 5th level (2d8 and 2d4), 11th level (3d8 and 3d4), and 17th level (4d8 and 4d4).