The Hidden Tower — James E. Wisher

Otto Shenk is the youngest son of a minor baron and a wizard.Abused by his family and considered less than human by his kingdom, Otto does his best to survive.But everything changes when Otto stumbles across a tower hidden deep in a dark part of the forest near his home.A tower that was once the home of an Arcane Lord, the immortal wizards that long ago ruled the world.Otto's life will be changed forever.And so will the world.