That was... 
 I... 
 The agony... 
 Aaaugh! I have no clue what just happened (I mean, I do, because it was written clearly and makes complete sense because Brandon Sanderson is a talented writer and world builder whose writing just works, but, still, I'm lost.) 
 What a perfect ending. What a perfect, heartbreaking, crazy ending. Every new reveal was so surprising, but then, it makes sense and doesn't contradict any of the scenes from the first two books. This is one book where you know that the author knew the whole story from the beginning and was building towards the final climax. Boy, is it intense and amazing and everything it needed to be. I don't think my heart will stop racing for a few days at least.