The Great Rift — Edward W. Robertson

Five years ago, young sorcerer Dante Galand and his friend Blays averted war against their new home, the city of Narashtovik. Ever since, they've been repaying their debts, arming and training the nomadic norren people in preparation for rebellion against the empire that enslaves them. When Dante hears a nearby norren clan is in possession of the Quivering Bow -- a legendary artifact that can strike down walls with a single arrow -- his course is clear. With such a weapon, he can secure independence for both the norren and Narashtovik. But the bow has been taken by the enemy. Following a trail of pirates and slavers, Dante, Blays, and a clan of norren warriors strike deep into enemy lands. Until now, their rebellion's been kept secret. But their quest for the bow leads Dante and Blays to an all-out assault on the personal manor of powerful lord Cassinder. Enraged, Cassinder will have his revenge on norren and Narashtovik alike -- and this time, there will be no stopping the engines of war.