Kilnharrow Oni

Flying
Gorge {2}{r}{r} (You may cast this card face down as
a 2/2 red Devil creature with haste for {3}. Turn it face up any time for its gorge cost.)
You may sacrifice a creature with 3 or greater toughness to pay a gorge cost.
Driven by a void they cannot fill, imprisoned in degrading molten flesh, they strive and savage among each other for dominance.