The powerful Thoth Tarot deck was designed by Aleister Crowley, an influential and controversial occultist of the early 20th century. Sauron’s giant eye is the opened vortex on the top of the tower as seen in Crowley’s Tower card. Aleister Crowley was a member of the Golden Dawn, a secret society J.R.R. Tolkien is rumored to be a member of. What kind of dawn? The dawn of the Golden Age of Horus.
So says the man to the all watchful eye.