Wizard Games — Ronnie G. Anderson

Sothal, the ancient immortal High Priest of the two headed dragon from Hades (a place different from Hell) tries to keep his immortal step daughter alive as she matures and tries to steal his magical secrets, some of which could spell the man's undoing. Brenna, in the meantime, tries to steal a spellsword from her stepfather and increase its power. In its ultimate form it would make one a god. Brenna has plans to send her stepfather to Hades, but not as its god!