Beast Quest: Cypher of the Mountain Giant (Book 3) by Adam Blade

One boy's journey to help his village becomes a quest to save the kingdom. Features a fearsome new beast in every book!

Under the spell of the dark wizard Malvel, Cypher the one-eyed Giant wreaks havoc on the city he used to protect: Colton, the very center of the Kingdom's trade routes. Our heroes must head North to the mountains to free Arcta and help unearth Colton from mudslides and rock falls before it's too late!