necrophage
Class: mage : 2 cleric : 2 druid : 2
Domains: undeath
Damage Type: acid
Syntax: cast CLASS necrophage on TARGET

You create a pale yellow slime on the target. The slime begins to devour the target rapidly, causing them to suffer. An undead creature may attempt to save from the damage to reduce it, but if it dies while the spell is in affect, it may explode with acid. If it is already a corpse, it will explode immediately