Divine Purification

You reach into the fabric of life and death, channeling divine and arcane energies to reverse the corrupting influence of undeath. Choose one undead creature within range that you can see. The target must make a Charisma saving throw, which it may choose to fail. On a failed save, the target is immediately transformed into its non-undead state, restoring its original body, soul, and mind to its state at the time of death (or a state dictated by its natural life cycle, as appropriate).

If the target’s original body was destroyed or irreparably decayed, the spell re-creates its body as if using the resurrection spell, and the creature’s soul is drawn back if it is willing. If the target is unwilling or its soul cannot be restored, the spell fails.

On a successful saving throw, the target takes 10d10 radiant damage, or half as much on a failed saving throw if the creature’s soul refuses the transformation. This damage bypasses resistances and immunities to radiant damage.

If the target is a unique undead, such as a lich or vampire lord, the spell only works if the creature’s phylactery or similar anchor is destroyed or unavailable.