The Shifting Sands — Erin Manning

Sam Oldfield is trapped in Ebdyrza. On the one hand, he now knows the identity of all three of the Paragons, the evil Enchanters trying to take over the magical land. On the other hand, a reckless bargain Sam made with the Paragons' leader to free his family from their power has backfired, and Sam is trapped in the most dangerous place in all Ebdyrza: the Shifting Sands. Alone, stranded, and struggling to stay alive, Sam realizes that time may run out for him before he can escape. But if he can't figure out a way out of this deadly desert, Sam may not be able to stop the Paragons from their most evil plan yet -- a machine that drains the magic from helpless creatures and makes the Paragons' army unstoppable.