The Stone (en Inglés) - Shay Casper

The war has arrived-and not everyone will survive it.

Across a cursed valley, the Idrudelian army faces an enemy that does not hesitate, does not falter, and does not care who dies. The battlefield is more than bloodshed-it's the slow unraveling of everything Harper fought to protect. Allies fall. Lines blur. And the cost of victory may be more than she's willing to pay because peace may not come from winning the war...but from making a deal with the very thing that started it.

In the explosive final installment of The Witch Series, The Stone delivers a breathtaking conclusion where sacrifice, loyalty, and the fate of the world collide.