Undead Torch

This spell causes any one corporeal undead creature of the caster's choice to blaze with cold blue flames (similar in appearance to those caused by the "chill shield" effect of a fire shield spell). The spell is primarily used to augment the damage done by a skeleton or zombie undead servitor or to impress hostile intruders. The undead creature need not be a willing spell recipient, but it is unharmed by the flames, which also have no effect on nonliving material such as clothing worn by the undead, scrolls or other paper it may be holding, and so on.

The cold flames created by this spell sear only living flesh and deal 2d4 points of damage per contact (or per round of continuous contact). Their damage is added to any harm done by the undead creature in its usual attacks on living creatures. This spell cannot be cast on noncorporeal undead creatures, and corporeal creatures that transform themselves or are transformed into a noncorporeal state cause the spell to collapse (expire) in a pinwheel of fading, dying flames. The flames of this spell never harm undead creatures.

The spell's material component is a living or dried (dead) firefly or glow worm.