Dragonvein: Book Four — Brian D. Anderson

The Eternal Emperor Shinzan continues to gather his strength. And the power he will unleash is beyond the imaginings of the spirits themselves. No army can stand against him. There is only one who can give Lumnia the freedom she has craved for so long. Only one who can save the world from being consumed by the Emperor's evil. But will it be Ethan who faces him? Or will it be Martok?