Two-Headed Crow

The two-headed crow is the spirit of murder. One head is white, and the other is black. They feed off of the death of another person, especially when it's from another human's doing. They're the most obvious spirit to spot because of the two heads. Make deals with people that are usually on the brink of death. These deals allow the crow to keep the person alive but without a soul, and for the human to keep themself alive they need to commit murders to feed the crow.