Vincalis the Agitator

Vincalis the Agitator is a prequel to Diplomacy of Wolves, Vengeance of Dragons and Courage of Falcons. The Hars Ticlarim is a miraculous place of wondrous beauty based on a science of sorcery called Dragon Magic. But this magic draws its power from the agony of slaves who are killed for sorcerous fuel. And for three thousand years, no one has dared question this inhuman cruelty until now. Wraith, a boy with uncanny power, tries to start a revolution. Solander, his friend, believes he had discovered a totally new form of magic. And then there's Luercas, a sadistic noble who will commit any crime that furthers his ambition. All three are clever, resolute and driven. For they challenge the rulers of globe-spanning power that has endured for milleniarulers who will do anything to stay in power forever.