Bhuta

When sapient creatures die violently in a natural setting or a location infused with primal magic, they sometimes rise as a ghostlike undead called a bhuta. Resembling a translucent version of their mortal form, only shadowless and with backward feet, a bhuta's lust for vengeance or unquenchable desire to complete an unfinished task poisons the natural world, turning animals into agents of the bhuta's corrupted will. However, a bhuta's connection to their mortal life is weak and vague, more a series of compulsions and triggers than the torturous recollections of a ghost. Thus, while a bhuta might start by hunting down and devouring those who slew their mortal form, they find no relief and soon turn to predation through their domain.