From the back cover: The definitive d20 System resource for spellcasters. - More than 100 new spells for all classes, allowing characters and DMs to add power and variety to their games. - Detailed guidelines on construct design that take the mystery out of creating powerful golems and animated objects of all kinds. - Rituals and ceremonies that grant divine spellcasters extraordinary abilities. - Expanded familiar rules allowing characters to bond with strange creatures and to give their existing familiars additional powers. - Rules detailing new types of magic, including chaos magic, ward magic, and spirit magic. - New item creation feats detailing the crafting of powerful new types of magic items. - Rules for building personal and arcane libraries. - New rules detailing the process and benefits of magical research. - Rules for using alchemy to identify and create poisons and extraordinary materials, as well as several unique alchemy items. - Two new classes of magic items that mold themselves to the characters who wield them. - Several dozen new magic items to augment any campaign setting.