The three most powerful progenitor dragons, Siberys, Eberron, and Khyber, discovered (or created) the Draconic Prophecy. Khyber and Siberys disagreed over the Prophecy and battled with one another. Khyber was victorious over Siberys, and sought to take control of the Prophecy, only to be attacked by Eberron. Eberron wrapped his coils about Khyber, trapping the evil wyrm. In the end, Siberys' shattered body became the Dragon Above - the glowing ring that surrounds the world. Khyber, still trapped in Eberron's coils, became the Dragon Below and the source for all great evils. Eberron healed the World Between by becoming one with it.