Academ's Fury (the Codex Alera)

SUMMARY: For one thousand years, the people of Alera have united against the aggressive and threatening races that inhabit the world, using their unique bond with the Furies--elementals of Earth, Air, Fire, Water, and Metal. But now, the unity of the Alerians hangs in precarious balance. The First Lord of Alera has fallen in his efforts to protect his people from the vicious attacks of their enemies. Now, the fate of the Alerians lies in the hands of Tavi, a young man who must use all of his courage and resourcefulness to save his people--and himself. Tavi is ostensibly serving as a page but secretly training to become a spy. When the first lord falls to a sorcerous attack, Tavi and his closest friends and teachers must conceal the lord's condition lest the realm fall into civil war. In the Calderon Valley, a long--forgotten horror awakens and heads for the heart of Alera, while Tavi's closest relative, the newly appointed Steadholder Isana, faces at least two sets of assassins The precarious alliance between the people of Alera and the furies is thrown into disarray by the death of the First Lord of Alera, and the fate of the Alerians lies in the hands of Tavi, an untried young man who must draw on his courage to save his world