Yeti

Orcs  - Tuacan forest dwellers resumed their tribal and clannish ways after the Ruining. In old orc society leaders had displayed their right to rule through fears of bravery and renown. After the ruining the new remaining orc leaders needed new feats of wonder to inspire their dispossessed people. Their population was a fraction of what it was and their adopted home was reduced to ash. One young warrior [...] discovered references to the ancient yeti race in surviving elven tomes, and sought to hunt them for renown. In disturbing the Yeti he sealed the fate of the orcs by becoming hunted in turn.

Yeti - Yeti are ancient slumbering creatures from an older and more primal age when the world was young and the nine kings were frivolous and unsubtle with displays of their power. Created by [...] as creatures of slaughter in a simpler and more bestial time they were left like abandoned playthings when the nine moved on to create more the complex civilizations and subtle brings that became the hierarchy. The yeti were left forgotten and under their own stewardship in the wild parts of the world becoming avatars of nature. Freed from the base urges of the nine kings the yetis primal rage dulled and in subsequent eons they fell into a deep torpor like many of the primordials, drawing them into the realm of [...]. However in dreams the yeti were perhaps reconnected to the smaller races. They slowly observed and accumulated knowledge of the new people, whenever they dreamed of the primal dark places. The feeling of something watching hungrily from the dark.

This all changed that were awoken by the Orcs. After the Ruining the Orcs were left displaced from their ancestral homes in the Tuacan forest left burning after the banishment of their cruel God. Filled with hubris, the Orcs looked for great foes to better. Stumbling upon legends of the Ancient primordial Yeti (called Mi-Goi in the surviving ancient texts). the Orcs woke them from their slumber in the Mountains of Leng. Not understanding what had become of Forruin since they entered their slumber eons past the Yeti saw only the aggressive Orcs and the ruin of the primal land and blamed them for the unmaking of the world. Unrestrained by the king if dreams, the Yeti started a Pogrom on the Orcs who were unprepared for what they had released. The surviving orc nation was sundered and scattered.