Mo-Gúhl wasn't minded to accept the fate of his very people. His very own exile drove him to walk through the red desserts of Gúhl-Kassar. During a cold night he had a vision from the god of the shadows, Khathar. He was proposed to get back until the last of his very own.
With only one condition.
There was a village down to the east, where mountains were tall and thin and shadows blue as the sky. A village of fateless green and not so big creatures with horns instead teeth. The will of Khathar was Mo-Gúhl to destroy that village.
At the end, the great orc climbed one of those thin mountains and shouted to the god of the shadows.
He was never answered back.