3.5 stars, although 5 solid stars for the inclusion of another "didn't see that coming Sanderson twist" in the final chapters. Holy shit...he's the best!!! 
 I was hoping this would be a little more sci-fi and a little more YA. Seems like teen boys are the intended audience. That is not me. 
 I did enjoy the book nonetheless. It's interesting to see how the Epics use their powers. I'm not a Cosmere expert but I'm thinking there's some allomancy going on. On to Firefight!!!