The Witherwood Pact

From publisher blurb:

In the ashen valleys of Myrathos, where moonlight bleeds through dead trees like silver knives, legends whisper of a beast not born of earth, sea, or sky—a creature said to bear the mark of ancient sins. The wind carries strange songs, the stones speak names no tongue should remember, and the fires in the hills are never tended by human hands. The hunt has begun—not for gold or glory, but for the very shape of fear. Beneath that veil of twilight silence, the shadows stir. In old towers and broken tombs, those who once bent the laws of flesh and soul rise again to stake their claim on the world. And at the heart of it all, a single, echoing name: Ushabel of the Pale Flame—a myth, a beast, or perhaps something far worse.