Winterbirth (Godless World Series #1)

An uneasy truce exists between the thanes of the True Bloods. Now, as another winter approaches, the armies of the Black Road march south, from their exile beyond the Vale of Stones.
For some, war will bring a swift and violent death. Others will not hear the clash of swords or see the corpses strewn over the fields. Instead, they will see an opportunity to advance their own ambitions.
But soon, all will fall under the shadow that is descending. For while the storm of battle rages, one man is following a path that will awaken a terrible power in him -- and his legacy will be written in blood.