[quote=@Willy Vereb]
Halfway finished with my history section for Yllendthyr.
I started from the prehistoric times and I am now at the early middle ages.
There's just one issue:
I need an enemy.
During the early middle ages the territory what latter be known as Yllendthyr was split into the dominions of 27 warlords.
I need some kind of power which would force them to unite and become the empire we (will) know.

EDIT:
BTW, the best to imagine elves in the early middle ages as the Mongol Empire. They use griffin riders shooting arrows from the skies or deliver massive skydiving charges.
[/quote]

The Orcs? 

Snazdonia?