The Hero of Ages by Brandon Sanderson (Mistborn, Book 3)

Synopsis:
With the power of Ruin unleashed and the power of Preservation nowhere in sight, fearless allomancer Vin and the remains of her thieving crew are the ones who must save the world.

Review:
While I have been continually disappointed by the cardboard characters and flat dialogue in the Mistborn trilogy, I was thoroughly satisfied by the mindblowing revelations in the final book, The Hero of Ages. The action is incredible, the world-building up to the highest standards, and there’s even some fascinating theological angles. The introduction of a new kind of magic adds a horror element that I really dug. I’m really glad I stuck with this series!