Jinx: The Wizard's Apprentice by Sage Blackwood

It's not every day that your evil stepdad abandons you in the deep, dark forest of the Urwald. And it's not every day that a wizard rescues you from the clutches of gnarly trolls. But for Jinx, this isn't turning out to be a very normal sort of day...

The bubbling cauldrons and coloured potions of the wizard's house are a world away from the life Jinx has left behind. Even the walls are soaked in magic, and it's not long before Jinx begins to unlock his own rare powers.

But Simon Magus is no ordinary wizard. He seems to need something from Jinx - something dark. And Jinx begins to wonder: can he trust Simon... at all?