The stormcaller - Tom Lloyd

In a land ruled by prophecy and the whims of gods, a young man finds himself at the heart of a war he barely understands, wielding powers he may never be able to control.
Isak is a white-eye, born bigger, more charismatic, and more powerful than normal men. But with that power comes an unpredictable temper and an inner rage he cannot always hide. Brought up as a wagon-brat, feared and despised by those around him, he dreams of a place in the army and a chance to live his own life. But when the call comes, it isn't to be a soldier, for the gods have other plans for the intemperate teenager: Isak has been chosen as heir-elect to the brooding Lord Bahl, the white-eye Lord of the Farlan.
The white-eyes were created by the gods to bring order out of chaos, for their magnetic charm and formidable strength makes them natural leaders of men. Lord Bahl is typical of the breed: he inspires and oppresses those around him in equal measure. He can be brusque and impatient, a difficult mentor for a boy every bit as volatile as he is.
But now is the time for the forging of empires. With mounting envy and malice, the men who would themselves be kings watch Isak, chosen by gods as flawed as the humans who serve them, as he is shaped and molded to fulfill the prophecies that circle him like scavenger birds. Divine fury and mortal strife is about to spill over and paint the world with blood.
The Stormcaller is the first book in a powerful new series that combines inspired world-building, epoch-shattering battles, and high emotion to dazzling effect.