The Umbral Deluge

The Umbral Deluge was an Abyssal invasion of the Material Plane by the Demon Lord Vyriavaxus. It led to the fall of the Imperium of Hyx and the temporary unification of the remaining realms under the Brass Pact, an alliance led by the powerful Judgeship of Akk-Ur. After barely managing to defeat the Dark Host in 995, Akk-Ur consolidated into the Kingdom of Akkon and emerged as the military and economic hegemon of the continent.