The Hero of Ages by Brandon Sanderson

Tricked into releasing the evil spirit Ruin while attempting to close the Well of Ascension, new emperor Elend Venture and his wife, the assassin Vin, are now hard-pressed to save the world.
This adventure brings the Mistborn epic fantasy trilogy to a dramatic and surprising climax as Sanderson's saga offers complex characters and a compelling plot, asking hard questions about loyalty, faith and responsibility. From Goodreads.

Another book it took me a few chapters to get back into, as it is so long since I read the second book. It was a brilliant end to the Mistborn trilogy. Vin and Eland are the main characters but so are the rest of the group as they nearly all have major parts to play.

This book qualifies for:
Goodreads Reading Challenge 2015
2015 Witches & Witchcraft Challenge
Romance Readers Reading Challenges: Word Hunt 2015
The Challenge Factory: Scavenger Hunt Part XV
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Rawk-A-Tiers: Rhyme Time
Rawk-A-Tiers: Scavenger Hunt
Rawk-A-Tiers: Getting Acquainted
Rawk-A-Tiers: Big Books Bonus Club
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Crazy Challenge Connection: Monopoly