-Well how'd you become exalt, then?

-The King of Divine Dragons, her claw clad in prismatic emerald scales, drew forth the Falchion from the root of her fang, signifying by divine providence that our lord Anri was to wield the Falchion. That is why I'm your exalt!

Look, strange dragons going around distributing teeth is no basis for a system of government
I mean, if I went around claiming I was emperor because some spicy lizard had lobbed an incisor at me, they'd put me away!