The Reign of Dregoth
Legendary Scourge of Athas
Nobody has seen the Dragon and lived. Sure, there are many who claim to have seen the Dragon, but they are universally revealed to be liars, charlatans or drunks. Nobody even knows if the Dragon is an actual, corporeal being or some formless bane of the wastelands.
The Dragon is the only being that the Sorcerer-Monarchs of the Seven Cities propitiate. Whether they fear this entity or merely perform the Dragon Sacrifice for more pragmatic reasons none can say. What can be said is that each year, thousands of people vanish in the wastes never to be seen again.