Winthrop's Undead Self Transmogrifier
(Necromantic)

Range:  0
Components:  V
Duration:  2 turns per level
Casting Time:  4
Area of Effect:  The caster
Saving Throw:  None

This spell enables the spell caster to change self into any undead creature of Hit Dice equal to or lower than the caster's level. The spell caster must have intimate knowledge of the undead, either frequent combat or study of natural philosophy thereof. Unlike polymorph self, however, the spell caster attains all powers of the undead creature. The caster retains their original mind and personality but loses use of the classes that they are trained in while transmogrified. That is, he cannot cast their spells, cannot use fighter tables, etc.

