Enchant creature (Target a(n) creature as you cast this. This card enters the battlefield attached to that creature.)
You control enchanted creature.
At the beginning of the end step, if you control no Demons, sacrifice Mark of the Oni.
The information presented on this site about Magic: The Gathering, both literal and graphical, is copyrighted by Wizards of the Coast.
This website is not produced, endorsed, supported, or affiliated with Wizards of the Coast.