Elevera (The Dragoneer, #8)

In the thrilling conclusion to The Dragoneer series, Trysten and the villagers of Aerona deal with a stranger dropped in the den by Exeris. She warns Trysten of an approaching enemy, one that is impervious to the bows of the horde and Trysten's command of the dragons. But the stranger also has a plan to defeat Exeris once and for all.

If she can be trusted.

What was fated to be no longer is. Destinies fall into dust. And as Aerona grapples with an enemy unlike any faced before, Trysten must prove that she is willing to sacrifice anything to save the village, the weyr, and those she loves.