Legends of the first empire, book 6: Age of EmpyreMichael J. Sullivan2020

A DOOR OPENS. AN ARMY OF DRAGONS ADVANCES. AND THE FATE OF THE LIVING RESTS WITH THE DEAD.
After obtaining the secret to creating dragons, the leader of the Fhrey has turned the tide of war once more—but gaining the advantage has come at a terrible price. While Imaly plots to overthrow the fane for transgressions against his people, a mystic and a Keeper are the only hope for the Rhunes. Time is short, and the future of both races hangs in the balance. In this exciting conclusion to the Legends of the First Empire series, the Great War finally comes to a climactic end, and with it dawns a new era—The Age of Empyre.