The Sisters of Magic - War of the Magi, #6

The world crumbles. The end is in sight. And only the sisters of magic can save the world that has tried to kill them. Faye and Claire Quin, separated by five years but united by shared tragedy and magic, are the only ones capable of stopping Vargus. By now all but inevitable, the fallen angel has set out for The Forbidden Lands with only one goal in mind--resurrect Ragnor. No man, no beast, and perhaps not even any other magi can stop him.
Despite their past, shared pain, and hatred of humanity, Faye and Claire must make their final stand. If they wish to see the magi survive another night, they must take up arms to defend the very world that has slaughtered their kind for centuries. Because they know that magi do not act for their own interests or self-preservation, but the greater good. They know that they are the only ones capable of preventing the end.