Dr. John “Apollonius” Opsopaus has practiced magic, divination, and Neopaganism since the 1960s. He has more than 40 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 Oracles of Apollo (Llewellyn, 2017) and The Secret Texts of Hellenic Polytheism (Llewellyn, 2022). Opsopaus frequently presents workshops on Hellenic magic and Neopaganism, Pythagorean theurgy, divination, and related topics. Email: opsopaus@omphalos.org