Al G. Manning introduced the public to the White Unicorn in 1982 in his book, "Your Golden Key to Success." He was the golden key to transcending the traditional four paths of traditional witchcraft to reach the "Path of the White Unicorn." The Unicom is indeed the most magickal of all the creatures of ancient and modem "mythology."
Unicorns are native to the astral/etheric and spiritual realms and are on naturally friendly, loving terms with all of the elemental and nature spirits we often invite (or in the old Craft.order) to help us attain our goals through ritual magick.