Soul of the world Ascension cycle, book 1.

Starvation and corruption have pushed the citizens of the New Sarrisant to the brink of rebellion. It will take only a spark to tip the scales towards violence, but as the Great Barrier weakens and rare arcane powers return to the land, war seems a foregone conclusion in David Mealing's cinematic debut epic fantasy. The Great Barrier has kept the colonies of the new world safe for hundreds of years. But the colony is a powder keg. Food shortages...