This belief system is first found and explained in Ultima VII Part Two: Serpent Isle, though chronologically it was adopted by the Ophidians after the events of Ultima I. The Great Earth Serpent and its two sisters taught this system to the Ophidians. This belief system was the base of the Ophidian civilization. It was widely used in Serpent Isle until the rise of Exodus in Ultima III. With the abduction of the Great Earth Serpent and the wars that ensued, the Ophidian civilization was destroyed, and this system was abandoned, at least in Serpent Isle.