Mistborn 3: The Hero of Ages by Brandon Sanderson

In this book the world is collapsing. All of the features that make it feel so foreign are becoming more pronounced and the real nature of the enemy is becoming clearer just as his power seems more and more inevitable. This book fulfills the promise of the first two books really well. This series, taken in whole, is one of the most satisfying fantasy epics I've experienced in a long time.