I am looking for the title of/author of a Science Fiction Fantasy Book with the plot: Young man in small village has a dream to go to an academy of learning in the main city. He starts out as a Shepard. He lives with his Uncle/Father and Mother/Aunt. Main characters have magical powers relating to elements. The father/Uncle has the ability to control wood and earth, the mother/aunt has the ability to control water. The servent of the Uncle/Father is a great swordsman who pretends to be slow. In one of the last battles of the book good guy's vs bad guys, Good walled up in village. Supporting character with ability to control earth consturcts large wall around village, farm hand who was pretneding to be slow display's his ability's with the sword by defeating bad guy who has the ability to work with steel. Last scene in book: ruler of land shows up in village where book started and offers the young man (main character, who started out a sheperd) a chance at his dream, to go to the academy. Young man is no where to be found because his is in the mountains hearding his sheep as a completion of a task in which the book started. Help?!?