Realms of Sorcery

From the back cover:

Realms of Sorcery, the long-awaited magic supplement for Warhammer Fantasy Roleplay, is a complete guide to the magic of the Old World, The book includes in-depth background on magic in the Warhammer world, new careers for human and non-human magicians, higher levels of experience for existing careers and information on the magic of the Orcs, Skaven and Chaos worshippers. There are hundreds of new spells and magic items as well as rules for creating new ones, plus details on the Colleges of Magic, runes, familiars, new magical creatures, and expanded rules for many aspects of wizardry.