Wiki: The Mistborn series is four high fantasy novels written by Brandon Sanderson and published by Tor Fantasy between 2006 and 2008. The series consists of the original trilogy of Mistborn: The Final Empire, Mistborn: The Well of Ascension, and Mistborn: The Hero of Ages.
Will it be a good movie?
Yes and YES!
You want me to explain that? Okay...
Sanderson crafted a unique vision with action-packed sequences, interesting characters, many plot twists in a strange and alluring world. The first book is a 'Oceans 11' like crew pitted against an immortal tyrannt. The idea works so well, but is already highly visual and could be easily adapted into a movie.
The second and third book feature a grander scope, while keeping the grounded dynamics of the characters.
Brandon Sanderson himself broke the news, that Paloppa Pictures LLC picked up the rights for his fantasy trilogy (Link). Paloppa is a new florida-based company with no prior projects. Thanks to the Mistborn Movie Guide, we know that a third draft was written and that they are looking for a studio right now.
In an interview Brandon Sanderson stated, that he would like Bryan Singer to direct, while Ellen Page is his dream casting for the female protagonist.
This is the 'Mood Trailer' Paloppa put together, to pitch the movie: