name=Mark of the Oni
image=https://magiccards.info/scans/en/bok/73.jpg
value=3.683
rarity=U
type=Enchantment
subtype=Aura
cost={2}{B}
ability=Enchant creature;\
        You control enchanted creature.;\
        At the beginning of the end step, if you control no Demons, sacrifice SN.
timing=aura
enchant=gain control,neg creature
oracle=Enchant creature\nYou control enchanted creature.\nAt the beginning of the end step, if you control no Demons, sacrifice Mark of the Oni.
