Flames Of Mira: Book One of The Rift Walker Series by Clay Harmon
Magic and redemption in a world of fire and ice.
Among boiling volcanoes under Mira's frozen lands, people like Ig are forced to undergo life-threatening trials that bind chemical elements to the human body. One of Mira's most powerful elementals, Ig serves as an enforcer for Magnate Sorrelo Adriann, but is cursed with flesh binding magic that will kill him at the first sign of disobedience.
When Sorrelo is overthrown, Ig quickly learns he can do far worse than what has been asked of him so far. If he can't escape the flesh binding in time, he will have to kill friend and foe alike to stop his master reclaiming the throne, or sacrifice himself trying.