Mistborn: The Final Empire (Mistborn #1)

In a world where ash falls from the sky, and mist dominates the night, an evil cloaks the land and stifles all life. The future of the empire rests on the shoulders of a troublemaker and his young apprentice. Together, can they fill the world with color once more?
In Brandon Sanderson's intriguing tale of love, loss, despair and hope, a new kind of magic enters the stage - Allomancy, a magic of the metals.