John Michael Greer has been a student of monster lore and the occult since 1975. He is also the author of several books, including Natural Magic: Potions and Powers from the Magical Garden, Circles of Power: Ritual Magic in the Western Tradition, and Inside a Magical Lodge He has written articles for Renaissance Magazine, Golden Dawn Journal, Mezlim, New Moon Rising, Gnosis, and Alexandria.

A student and practitioner of geomancy and sacred geometry for more than twenty years, fluent in Latin and medieval French for the past five years, and a Certified Tarot Grand Master, Greer has studied geomantic texts from the Middle Ages and Renaissance, learning and testing out the techniques that were used when geomancy was at its height. Greer is an active member of five fraternal and two magical lodges. He lives in Seattle, where he studied the legends and monster lore of the Pacific Northwest and attends lodge meetings in a building with its own resident ghosts.