Nightmare Shepherd

Demon Some foul souls can’t let go of the miserable lives they had. Having been despicable in life, these spirits fester in death. The worst of these hateful dead, through ages of bitterness, gradually transform into fiends, the tormentors of the Underworld. The people of Theros know these fiends as demons.
Nightmare Shepherd A nightmare shepherd is a gaunt, ashen fiend with leathery wings. It carries a shepherd’s crook, which it uses to direct a flock of wandering dead that it torments and occasionally feeds upon.
Overseers of the Underworld. Nightmare shepherds are Nyxborn, drawn from the god-energy of Erebos to be guides of the dead, shepherding them to one of the five wards of the Underworld where they will spend their dismal eternity. They prey upon souls who wander from their rightful places in the Underworld.