The Complete Monstrous Wizard's Compendium

From the back of the book: The Complete Monstrous Wizard's Compendium is a d20 system sourcebook designed for players and game masters who want to take their "typical" fantasy campaigns to the next level. This book gives you the information you need to create and play characters from six different monstrous races, but more importantly, it also gives you the tools you need to create powerful spellcasters - of any race.