Riptide (Strangefall Book #1‪)‬

Strangefall: A frontier of frontiers, a valley bordered by the demonic unknown and ruled by tyrannical orb wizards named the Prei-Dan.

To the Boy, it is a chance at life anew. But his passage is paid in blood; he is bound to assist a duo of unstable assassins in their journey deep into the ‘enigma sea’ of Shulsa where primordial beasts rule and a clockwork super tide leaves no time for rest. Their mission: Find and kill a rogue orb wizard who experimented with demon flesh.