
The Grand Duke Mephistophilis teaches many modern arts and he is helpful. Disregard the words from the Black Raven about summoning this demon four times. You can do as many rituals with Mephistophilis as you like.
“I am Mephistophilis and I am the grand master of many arts. I am one of the seven Grand Dukes of the Black Raven. I can teach you many things very fast. I can give you good luck in life.
I have many spirits under my command. Whenever I command them to serve they do so fast.”
Source: The Black Raven
Financial pacts
I have agreed upon many financial pacts with Lucifer, Lucifuge Rofocale and Mephistophilis. I also forged several financial pacts with Lucifer and Belial.
A financial pact is an agreement between you and the demons. Of course, the demons do not provide their services for free. They want a payment.
My clients provide offerings to the demons during each full moon. I have made other “grander” payments to the demons, because my personal financial pacts were also partial protection pacts.
I asked the demons to protect me from heartbreak and I sold my love life to the demons, because I wanted to focus only on work and money.
The demons accepted this deal at once, because all my undivided attention, devotion and free time belongs to the demons.
Mephistophilis

After rituals with Mephistophilis I started to understand that dreams actually do come true, but it is important to know what we want in life.
Mephistophilis teaches strategy and planning. This demon sent me off to special places to do some research. He teaches about marketing, and about the connection between symbols and the human brain.
Good luck has been with me all the time thanks to Mephistophilis. This demon is a psychologist and he teaches how to increase sales and how to increase the income.
Mephistophilis taught me stuff about landing pages, internal links, RSS feeds, buttons (and how to create them), key words, colours and how colours influence people to make decisions.
Mephistophilis: the correspondences

There is a symbol of Luna beside the seal of Mephistophilis in the Black Raven. This means that Mephistophilis is matched to Gamaliel.
The correspondences of Yesod can be used even for Gamaliel.
Ruling planet: Moon
Day: Monday
Astrological hour: Moon
Paper seal colour: purple
Candle colour: silver or purple
Metal: silver
Number: 9
Gem: clear quarts
The best day for rituals with Mephistophilis is Monday. You can fine-tune your magick by doing the ritual during the astrological hour of the Moon.
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