Cubicle 7 Entertainment has re-released the classic Warhammer Fantasy Roleplay 1E magic supplement Realms of Sorcery in PDF. While this is a first edition book it really doesn’t take much effort to use this with WFRP 4E. Keep in mind this is a scan of the original book. Right now you can snag the 258 page PDF for $9.99 from DriveThruRPG.
From Cubicle 7:
Candle flames reflected in the two men’s eyes. Around them in the underground room lay papers, manuscripts, scrolls and books in various ancient languages with pages marked and margins filled with scribbled notes. One table was a jumble of alchemical equipment, its glassware cold and blackened…
Realms of Sorcery, 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.