[@Witch Cat] I feel if that was a thing it'd require a lot of ingredients from the infernal plain, and I really think the familiar is a better choice. One of the core concepts of demonology is that you are making a pact with a demon. It's not looked down on massively since usually Darwinism takes care of the fools, but that really is a core concept to it. It's you giving the demon access to earth and in return the demon gives you infernal magics. The core of it is the pact.