The companion book to Divine Cults of Glorantha, this sourcebook reveals the myriad cults, orders and sorcery schools that answer to no god or goddess "“ no higher power beyond the strength of its adherents. Contained herein are glimpses at the sorcerous cults of the God Learners and the spirit-questors of Glorantha's ancient and sacred shamanic traditions. Sorcerer and Shaman characters will find this resource invaluable, fleshing out Glorantha's magical practices, spirit cults and Middle Sea schools of sorcery. Inhuman sorcery also features, from Troll orders and Elf to Dwarven cults, founded on principles few humans will ever learn and wielding magic few humans could ever hope to master. For characters wishing to immerse themselves in the diverse cults of Glorantha, perhaps eventually ascending to the highest ranks of influence and power, The Cultist's Compendium offers all the character options and new mechanics they need to do so.