Die Tribus Reihe

Feed your Hunger. In a distant, war-torn land, every man, woman and child must either consume the magical substance known as Sustenance or succumb to the Hunger. Those who succumb develop deformities and face exile — or even death. The scholar Azil wants nothing more than to lead a tranquil life and beat back the Hunger. But when a mysterious assassin tries to kill Azil, and a stranger shows up at his door challenging him to join her on a quest, he embarks on a dangerous journey to steal the sacred gems of Sustenance guarded in a forbidden fortress. To get there, Azil must venture through a land of floating cities, ravenous mage wraiths, ax-wielding warriors, and bloodthirsty bandits. But with the sacred gems of Sustenance come volatile magic — magic so strange and dangerous, that the prophecies foretell it could usher in a golden age, or turn its wielder into the darkest of villains.