Publication:Dread Codex/New Spells/Change Zombie

You touch a single zombie, which must then attempt a Will save to avoid the spell's effects. If the zombie fails its save, it becomes a ghoul. Controlled zombies transformed by this spell remain under their controller's command and still count against controlled undead HD limits, as do spawn created by the controlled ghouls.

Material Component: A bone from a ghoul and a black onyx gem worth at least 100 gp.