His Ancient Heart — M.R. Forbes

The promise is broken, an ancient enemy is revealed. Silas and Eryn's journey to the Dark has changed them both, leaving Silas closer to his past, and Eryn at the precipice of a fate worse than death. Tracked by the vicious General Spyne, hunted by every soldier in the Empire, Silas is determined to find the Refinery and seize control of the cure for magic, while Eryn's survival depends on parting ways with the man she loves and being delivered to the enemy's gates. Relationships will be tested, secrets will be unraveled, and a dragon will fly.