Khyber stretches beneath the planet, and the blood of Khyber stretches well beyond Khorvaire. Thousands of years ago, a clan of dark sorcerers ruled one of the provinces of Sarlona, using the mystical might of the Dragon Below to enforce their tyrannical rule. As the inspired rose to power in Sarlona, they systematically destroyed the dark sorcerers and all other groups that might oppose them. Some members of this sorcerer clan, however, fled to the sea only to be shipwrecked on the inhospitable shores of the Demon Wastes. The gilts of Khyber helped them survive in this dangerous land, although madness and savagery claimed many of them.
Today, their descendents form one of the Carrion Tribes of the Demon Wastes, calling themselves the Cold Wind. The blood of Khyber runs strong in this tribe, and the Lords of Dust occasionally recruit powerful sorcerers of the Cold Wind. While sorcerers found in the wastes themselves are feral savages, the rakshasa educate and train those they recruit to function in the world beyond.