The Shield of Soren by D.M. Cain

Young Soren is the apprentice of legendary warrior, Raven Lennox. At the age of sixteen, Soren is expected to fight in the eternal war against the Brotherhood of Shadow - but he seems to be more interested in mischief than battle.

When one of Soren's adventures goes off course, he accidentally unleashes a deadly threat. As an age-old prophecy comes to pass, Soren must take a perilous journey deep into enemy territory.

But does he have what it takes to save the realm, or will the Brotherhood destroy everything he loves?