I'm satanist and I'm gonna teach how to seal a small pact with Satan. It will work, no matter your faith:
1) Get a good-looking piece of paper (Satan, like us, is a vanity lover, so take care at this part);
2) Write the following:
Satan, I invoke you with faith my omnipotent, mighty only Lord, to (write here exactely what you want Him to do for you). In reward, I promisse to (offer Him your devotion or something really valuable to you. Must be an action of sacrifice. Also, stipulating a soon date to accomplish is substantial).
I, (your name), sign this pact with my name and my blood.
3) Sign the pact with your name and your blood;
4) Draw a Pentagram across the blood in the paper.
If you make it right (it's easy), you'll certainly get what you desire. If it has worked for you, feel free to give me feedback.
PS.: make your handwriting as handsome as possible while making the ritual. Also, try to be in a place where you can get concentration. DO NOT MOCK SATAN AND PAY YOUR DEBT.
Wolf At Alamos