Dr. Opsopaus has practiced magic, divination, and Neopaganism since the 1960s. He designed the Pythagorean Tarot and wrote the "Guide to the Pythagorean Tarot." His recent "Oracles of Apollo" teaches divination based on ancient Greek texts. Opsopaus frequently presents workshops on Hellenic magic and Neopaganism, Pythagorean theurgy, divination, and related topics. In the early 1990s he founded the Omphalos, a networking organization for Neopagans in the Greek and Roman traditions. He is past coordinator of the Scholars Guild for the Church of All Worlds, past Arkhon of the Hellenic Kin of ADF, and a member of the Grey Council