Transmutation (Polymorph) [Evil]
Level: Sorcerer 8
Components: V, S, Evil
Casting Time: 1 swift action
Range: Personal
Target: You
Your body becomes powerfully muscled as multicolored settles cover your flesh. Four draconic heads sprout from your shoulders.
You take the form of an aspect of Tiamat. You gain 100 temporary hit points, which disappear at the end of the spell’s duration. For details, see the Polymorph subschool.
Evil: Only evil-aligned characters can cast this spell.
Source: Dragon Magic, page 64.