Sandstorm

The genasi control almost all of Calimshan for their djinn overlords—all but a few outposts like the floating Island of the Free, where escaped slaves from Calimport's coliseum run their own brutal games. There, Cephas, a genasi with no memories of his past has spent his entire life fighting But one day a circus of misfits, lead by the crowlike Corvus Nightfeather appear and free Cephas—and for the first time Cephas can harness his inborn powers and control the stones and dirt beneath his feet.