Dr. John “Apollonius” Opsopaus has practiced magic, divination, and Neopaganism since the 1960s. He has more than 30 publications in various magical and Neopagan magazines and designed the Pythagorean Tarot and wrote the comprehensive Guide to the Pythagorean Tarot (Llewellyn, 2001). He is the author of the forthcoming Oracles of Apollo (Llewellyn, 2017). Opsopaus frequently presents workshops on Hellenic magic and Neopaganism, Pythagorean theurgy, divination, and related topics. He is a member of the Grey Council and is past Dean of the Departments of Mathemagicks and Ceremonial Magick of the Grey School of Wizardry. Email: opsopaus@omphalos.org