The Grimoire is an expansion of the magic rules from Shadowrun. It includes material for designing spells, using and forming magical groups, and the Enchanting of items. The Grimoire covers Initiates, Insect totems and Toxic shamans, adventuring on the metaplanes, Free Spirits, Magical Adepts, Alchemy, the creation of specialized types of shamans and mages, and presents a complete section on new spells as well as expansion of old ones.