Legend of the Narwhals — Robert Skead

When Viking Prince Asgar's mother disappears and his life is in danger, he sets off on a quest to find her and discovers the icy fortress of Arctinrod in his father’s Northern Kingdom. The land is like nothing he ever imagined—a world where narwhals are the nobility and snow monsters terrorize the mountainsides. Along with his sister Kari and best friend Tuka, Asgar must navigate a harsh new world of wolf attacks, blizzards, magic swords, stolen gold and assaults from snow monsters. When he learns about the legend of a supernatural tusk of the narwhal king which can shoot lightning-like bolts of fire, Asgar and his friends embark on a dangerous mission to infiltrate the snow monsters’ kingdom beneath the mountain to bring peace to a mystical world he never knew existed and fulfill his own noble destiny.