A Reign of Steel (The Sorcerer's Ring #11) by Morgan Rice

In A REIGN OF STEEL (BOOK #11 IN THE SORCERER’S RING), Gwendolyn must protect her people as she finds King’s Court under siege. She strives to evacuate them from the Ring—but there is one problem: her people refuse to leave. As a power struggle ensues, Gwen finds her queenship under challenge for the first time—while the greatest threat to the Ring looms.

Behind the McClouds lie the threat of Romulus and his dragons, who, with the Shield destroyed, embark on a catastrophic invasion, nothing left to stand between them and the complete annihilation of the Ring. Romulus, with Luanda at his side, is unstoppable while the moon lasts, and Gwen must fight for survival—for herself, for her baby, and for her people—amidst an epic battle of dragons, and of men. Kendrick leads the Silver in a valiant battle, and he is joined by Elden and the new Legion recruits, along with his brother Godfrey, who surprises everyone, including himself, with his acts of valor. But even so, it may not all be enough.