A very interesting twist to the Mistborn universe. I enjoy Sanderson's work, and while not as engauging as the original Mistborn novels, this does present a new twist and introduces new characters into the Mistoborn universe. I am looking forward to see where Sanderson takes these new ideas in the novels to follow. 
 While a background in the Mistborn novels is not required, I would suggest reading those first as this book assumes you have an understanding of those books. 
 WOrth reading if you are a fand of the Mistborn series although go into it with an open mind as this takes place long after the end of those books.