Forest Mage (The Soldier Son Trilogy, Book 2) by Robin Hobb large paperback 2006

Dark mysticism and primordial natural magic clash with the ever-expanding boundaries of the "civilized" world in the second volume of Robin Hobb's Soldier Son trilogy, Forest Mage.

The sequel to 2005's Shaman's Crossing finds protagonist Nevare Burvelle -- the second son of a nobleman and destined for a career in the military -- with his world turned upside down. After surviving a plague that wiped out many of the students and instructors at the king's military academy, Nevare returns home for his brother's wedding, only to learn that he has been medically discharged from the school. The plague usually leaves its survivors skeletally thin, but Nevare, inexplicably, has begun to gain massive amounts of weight. With his family believing he's a glutton, Nevare is disowned by his father and eventually ends up finding work as a lowly cemetery guard in a frontier town near the border with the Specks, a race of dapple-skinned forest dwellers who possess powerful natural magic. But in a world where technology never stops advancing, can the Specks survive? And what does the suddenly bloated Nevare have to do with their struggle?