Ashenfall: Rise of Drakesworn

In the cold shadow of Ashenfall Orphanage, Ember Ainsworth is nobody, just another invisible orphan in a kingdom obsessed with dragons. In Arlathia, a child's worth is measured by their potential to join the elite Drakesworn, a future strictly forbidden to the parentless. The Trials are for the noble, the pure, the privileged.
Until, by royal decree, everyone must attend.
Suddenly thrust into a world of magic, brutal tests, and deadly competition she was never meant to survive, Ember finds herself utterly alone, save for her fierce best friend and the watchful eyes of a disciplined warrior and a curious prince. She is untrained, underestimated, and desperate simply to keep her head down.
But the heavens have other plans.
When a titanic Pyrestorm Dragon descends from the clouds, defying centuries of tradition, it chooses Ember in a display of power no one has ever seen. The bond defies the laws of the land and ignites a firestorm of political conspiracy. Dark forces begin to move, and Ember learns that the real monsters aren't the ones in the arena.
As war stirs and an ancient enemy awakens, Ember must embrace her impossible bond and step into a destiny far grander-and far more dangerous-than any orphan could imagine. The world is about to change forever, and it starts with a girl who was meant to be invisible.