The Prince of Snow

Charmaine Grimes has a dangerous secret: she possesses the power of invisibility. But in the First Kingdom, those found with magic are forced to serve the wicked King Ronan or face execution.
No one has seen Dalton Saphirrus, Prince of the First Kingdom, in five years. Locked away as a result of the icy power flowing through his veins, he has been imprisoned by his own father.
After a devastating fire in Charmaine's hometown, knights escort the survivors to King Ronan's castle. With a mysterious enemy at large, the First Kingdom is threatened, and the destiny prophesied is ever-looming over Dalton's head.
As Charmaine falls for the Prince of Snow, she is thrown into a world of politics, cruelty, and temptations she never expected.When the First Kingdom's enemies attack the surrounding towns, and eventually the castle, Charmaine, Prince Dalton, and other allies must rise up for the battle of their lives, or die trying to save the kingdom.
The Prince of Snow is influenced by the legends of King Arthur. It is perfect for fans of Victoria Aveyard's Red Queen, Sarah J. Maas's Throne of Glass, and the CW's Reign.