Celestial Shadow's Quest

You reach a large strip of desert, at the very beginning of the desert, which leads to the den of Celestial Shadow. He has said that he shall grant an ability to those who make it to his den. Those who attempt it will face great difficulties. They begin at sundown and must make it to his den before sunrise on foot without the help of any magic. The will have to survive sandstorms, whirlwinds and quicksand which drag you back to the beginning of the desert. The course lasts for 25 miles.*