Promise of Blood : Book 1 in the Powder Mage trilogy - Brian McClellan

Little, Brown Book Group - <p>It's a bloody business, overthrowing a king. Now, amid the chaos, a whispered rumour is spreading. A rumour about a broken promise, omens of death and the gods returning to walk the earth. No one really believes these whispers. Perhaps they should. Winner of the David Gemmell Morningstar Award, Promise of Blood is the explosive first novel in the most action-packed and acclaimed new fantasy series in years.</p>