The Serpent's Orb (Wizard's Helper Book 1)

Through odd circumstances, Jack Winder becomes a helper for his village's healing wizard. As part of his duties, Jack is ordered to travel the length of Corand to the capital city to bring back a priceless object of power, the Serpent’s Orb. He soon finds that he is not the only one after the orb and someone is willing to kill to get it.