Group ritual has been a cornerstone of spiritual practice since time immemorial, yet its history and importance have often been overlooked by occultists of the modern age. This book is the first comprehensive presentation of group-oriented rites for modern magicians inspired by the works of Aleister Crowley. It contains rituals written by Crowley for his own magic circles, many of them unpublished during his lifetime, plus rare ancient texts that were Crowley's own inspiration. The rituals are newly edited and explained by Rodney Orpheus, who brings to this volume decades of experience in performing and teaching Aleister Crowley's rituals within Crowley's magical order Ordo Templi Orientis. He introduces each ritual with a clear overview, setting each in its historical context and explaining its function and mode of operation, and includes detailed notes on the setting and performance of each one. Whether absolute beginner or seasoned expert, magicians of all paths will find this volume to be an eminently workable and extremely powerful grimoire spanning centuries from ancient Mithraic and Bacchanalian rites, Goetia, and Gnosticism, right up to present day Crowleyan invocations and sexual magick. "With this book, Rodney Orpheus has produced the most significant Thelemic book written this century." -- David Rankine , author of The Goetia of Dr. Rudd, The Grimoire of Arthur Gauntlet etc. -- David Rankine "Eminently readable and (most importantly) usable, Grimoire of Aleister Crowley will keep many a magical group busy for years to come." -- Richard Kaczinski , author of Perdurabo -- Richard Kaczinski "The Grimoire of Aleister Crowley is sure to become a modern classic." -- Sorita D'Este , author of Practical Qabalah Magick & Hekate Liminal Rites -- Sorita D'Este "There are very few individuals living today who are qualified by education and experience to write this book, and even fewer with the talent and communication skills to bring it all to life on the printed page. Brother Orpheus is the incarnation of both these aspects of genius. Whether he is expanding upon classic Crowley rituals or creating and developing his own Thelemic ceremonies, the magician reader can be confident he or she is in good hands." -- Lon Milo DuQuette , author of Understanding Aleister Crowley's Thoth Tarot -- Lon Milo DuQuette "Rodney Orpheus, the modern Minstrel of Thelema, is back with another vibrant, creative, and irreverent effort that is sure to please and enlighten." -- James Wasserman , author of To Perfect This Feast: A Performance Commentary on the Gnostic Mass -- James Wasserman Lon Milo DuQuette  is a bestselling author who lectures worldwide on such topics as magick, tarot, and the Western mystery traditions. He is currently the US Deputy Grand Master of Ordo Templi Orientis and is on the faculty of the Omega Institute in Rhinebeck, New York, and the Maybe Logic Academy. His books include The Tarot Architect ,  The Magick of Aleister Crowley, Understanding Aleister Crowley’s Thoth Tarot,  and  The Chicken Qabalah . Visit him at  londuquette.com . Grimoire of Aleister Crowley Group Magick Rituals By Rodney Orpheus, ALEISTER CROWLEY, JOHN DEE Red Wheel/Weiser, LLC Copyright © 2019 Rodney Orpheus All rights reserved. ISBN: 978-1-57863-675-4 Contents Introduction by Lon Milo DuQuette, Preface, A Note on Safety, CHAPTERS, 1) The Ritual of the Mark of the Beast, 2) The Invocation of Horus, 3) Invocation of the Holy Spirit (Isis), 4) A Ritual to Invoke HICE, 5) A Rite of Isis, 6) Roots of Thelema I - A Mithraic Liturgy, 7) Roots of Thelema II - The Bacchanal, 8) Roots of Thelema III - Goetia, 9) The Brazen Head, 10) An Evocation of Bartzabel the Spirit of Mars, 11) The Supreme Ritual, 12) The Ritual of Consecration of an High Priest of L.I.L., 13) The Ritual of Initiation of a Thelemite, 14) Breaking of Bread, 15) The Mass of Babalon, APPENDICES:, I) Rituals from Liber O, II) The 72 Spirits of the Goetia, III) Three Holy Books, IV) Ritual J, V) Rituel de la Fraction du Pain, VI) Cakes of Light, BIBLIOGRAPHY, CHAPTER 1 The Ritual of the Mark of the Beast Aleister Crowley wrote a great number of magical rituals during his long and prolific career, but arguably his finest ritual is Liber V vel Reguli, which was originally published in Crowley's masterpiece Magick in Theory and Practice in 1929. This rite, also known as the Mark of the Beast ritual, is a version of one of the most fundamental rituals in the Hermetic magical tradition, the Pentagram Ritual. Pentagram rituals belong to a class of ritual generally known as "Banishing" rituals, although that's rather a misleading term, since they don't really just "banish" things. They are designed to set up a neutral ritual space that a magician can work in, and to invoke energy into the magician in order to power the Will. A pentagram ritual is an entirely self-contained magical operation, and the regu