Ancestual Vengeance

You summon the spirit of your long dead ancestor to seek justice on a creature that has wronged you.  Target a creature you can see with in 30 ft, they have to save on a Constitution saving throw or suffer 2d8 radiant damage, half as much on a successful save.  If the target is undead, they suffer 4d8 on a failure instead.

At higher levels: For each spell slot level above 2nd, the spell deals an additional 1d8 radiant damage, 2d8 to undead.