Prerequisites Edit

You need to be an Earthling, there needs to be a Demon present, and you need to have the blood of 3 earthlings or an angel.

The Actual Process Edit

The demon ritual requires you to gather the blood of either 3 Earthlings or 1 angel, although you can go about getting the blood however you want. Some demons may already have the blood and will simply turn you if you ask, although sometimes that is looked down upon.