Cerridwen Greenleaf has worked with many of the leading lights of the spirituality world including Starhawk, Z Budapest, John Michael Greer, Christopher Penczak, Raymond Buckland, Luisah Teish, and many more. She gives herbal workshops throughout North America. Greenleaf's graduate work in medieval studies has given her deep knowledge she utilizes in her work, making her work unique in the field. A popular blogger for New Witch Magazine, her books have sold over 100,000 copies. She lives in San Francisco, CA.

Judika Illes is an author, editor, card reader, educator, aromatherapist, and spiritual advisor. A lover, student, and practitioner of the magical arts since childhood, her numerous books include the bestselling Encyclopedia of 5000 Spells, Encyclopedia of Spirits, Encyclopedia of Witchcraft, Daily Magic, Pure Magic, and Magic When You Need It. Judika teaches in the US and internationally. Follow her on Instagram @judikailles.