Blight

The Chantry teaches us that it is the hubris of men which brought the darkspawn into our world. The mages had sought to usurp Heaven. But instead, they destroyed it. They were cast out, twisted and cursed by their own corruption. They returned as monsters, the first of the darkspawn. They became a blight upon the lands, unstoppable and relentless. The dwarven kingdoms were the first to fall. And from the deep roads, the darkspawn drove at us again and again, until finally we neared annihilation...

- Duncan, Dragon Age: Origins