The Rising Hero, The Half-Breed Chronicles, Book 1

Lemtor is a 13-year-old farm boy who has never known anything outside of his secluded hometown of Wilthax. But all that changes when his true heritage is revealed and he finds himself torn away into a distant land full of war, danger, and evil. Now he must unite the elven and human kingdoms, or the hated goblins will conquer everything he holds dear. The evil King Gortrax must be defeated at any cost, and that cost might very well be Lemtor's life...