When this spell is cast, all corpses and dying creatures (those below 0 hit points and disabled) in the spell's area are affected. Dying creatures are allowed a Fortitude save to avoid the spell's effects, but slain creatures are not. Those affected by the spell have all the blood drawn from their bodies (killing all those still alive), forming horrible tentacles of clotting, black blood. Material Component: A handful of dirt from a strangled man's grave.