Mistborn is an epic fantasy novel series by Brandon Sanderson, divided into multiple eras set on the same world, with the first trilogy (Era One) featuring a heist story in a world ruled by an immortal tyrant, followed by a second series (Era Two) set 300 years later with a Western/steampunk feel, and a third era (Era Three) planned to explore a more modern setting. The magic system, Allomancy, involves burning metals for powers, and the series is known for its intricate world-building and detailed magic.