The Hoarfrost King by Galit Ben-Ami

The delicate balance governing the magical land of Terah was hard-won by the blood of its people. But when peace was finally within their reach, the cold-hearted king of Navara betrayed the rest – usurping the magical powers of all other kingdoms for himself. His tyrannical rule lasted a millennium.
Lexi and Jimmy live on the Upper West Side, completely unaware of Terah’s woes and its people’s plight. When a mysterious artifact finds its way to them, the two childhood friends discover the important role they must play in the liberation of Terah’s kingdoms. Guided by the fabled Eye of Truth, Lexi and Jimmy’s choices tie their fates with Terah and its magical inhabitants.
But a secret kept deep within the icy peaks of Navara threatens to extinguish Lexi’s resolve. A secret of a prophecy, a thousand years in the making.

Category: Fantasy – Coming of Age