Federation of Three
The Collection is a group of six demon lords and their followers that waged war upon the Natural World ten years ago. They were defeated in a battle near Lestros but the effects of the battle caused the entire surrounding area to be reshaped. This “Reformation” formed the Terevana Valley and boxed in the local inhabitants from the rest of the natural world.
Putting differences aside The collection consisted of an unlikely but powerful unification of these Six Demon Lords