Thralls of a Tyrant God by Mars G. Everson

The world lies in ruins, with the remnants of humanity crushed beneath the iron heel of the Chainkeepers, enforcers of the God of Tyranny. But in the shadows of oppression, rebellion spreads unseen.
Senn, a former slave turned rebel leader, defied the tyranny of the Chainkeepers but lost the woman he loved. Now as the blessed Herald of the God of Greed, betrayal lurks in every shadow, as enemies and allies alike plot his downfall. Can he live long enough to get his revenge?

As the gods awaken and their machinations are laid bare, Senn and those he cares for will become their pawns, with the fate of humanity at play. Yet even pawns can topple kings.