Charnel Fire(Book of Vile Darkness, p. 87)
Level: Cleric 5,
Components: V, S,
Casting Time: 1 minute
Effect: One corpse
Saving Throw: None (Will negates for undead)
Spell Resistance: No (Yes for undead)
With sinister flame and brimstone, the caster completely consumes one dead body so that absolutely nothing remains. A creature whose body is destroyed by a charnel fire spell can only be brought back to life through a true resurrection spell. If this spell is cast upon a corporeal undead, the creature gets a Will saving throw, and the caster must overcome its spell resistance (if any). If the undead creature fails its save, it is destroyed forever.