During the Dark Ages there was a popular bit of papal propaganda regarding the mythical king of a lost Christian kingdom somewhere between India and Here-There-Be-Dragons-istan. Prester John, as he was known, was said to rule over a land that shared a fence with the Garden of Eden and contained the Fountain of Youth and a vast menagerie of Heffalumps, Star-Bellied Sneetches and other implausible animals. After a few hundred years of European explorers and treasure hunters trying and failing to find the magic kingdom, the legend died out and today Prester John remains mostly forgotten, only occasionally popping up in Marvel comics to do battle with Thor in between long stretches of waiting for Dan Brown to write a novel about him.