Mayflower was a bit of an odd witch. After finishing her studies, she hadn't dedicated herself to healing people, or telling people's fortunes, or advising local noblemen about upcoming droughts. Instead, she had withdrawn into her family's manor, now hers to enjoy entirely to herself.
What she did in that huge house on her own was a complete mystery to the rest of the world. No one was ever seen going in or out. Children dared each other to approach it, and occasionally they thought they glimpsed a beautiful, possibly naked, woman in one window or another. They were never sure though, and the dread that gripped them when they came too close prevented any further investigation.
Some of Mayflower's sister witches reached out to her on occasion, asking if she would not rather make use of her talents out in the world. She assured them that she was perfectly content with her solitude, and pointedly did not reveal anything about how she spent her days. Eventually, they stopped asking.
What Mayflower was actually doing was studying, intensely and doggedly. Specifically, she was studying a book she had found in her late mother's library, hidden in a secret compartment. It was titled the Book of Sin, and it contained a treasure trove of forbidden magic spells and enchantments. Mayflower locked it away out of fear when she first realized what it was, her teachers' warnings ringing in her ears. But curiosity kept pulling her back, and eventually she began dedicated all her time to trying to decipher its contents.
There was one spell in particular that drew her attention: a summoning spell titled "The Spell of Sexual Satisfaction". Mayflower certainly had some unsatisfied sexual desires, and she could use a way to relax while she worked on understanding the rest of the book. After several weeks of studying and experimentation, she was ready to attempt the summoning.
She gathered her ingredients into a cauldron, and began chanting while she stirred. As she recited the incantation, the house began to tremble slightly. She carried on though, and when it came time to complete the spell, she raised her witch's slate and drew her seal on it with her index finger. It glowed red. The candles in the room flickered, and black smoke rose from the cauldron. The smoke slowly took shape - Mayflower could see a pair of glowing eyes within the shifting form.
Trembling slightly, she said:
"I am Mayflower, and I have summoned you, demon, to serve me. Do you acknowledge my power?"
"I do, Mistress," the smoke said, although Mayflower thought she heard a note of contempt in the phrase. "My name is Tencifer, at your service."
"Thank you, Tencifer. As you can tell, you are bound to this cauldron. You may exert your powers within the confines of this room, but your physical form remains in the demon world. Your only purpose is to satisfy my sexual desires, and you may not do anything that is not in service of that goal. I assume you are up to the task?"
"I am, Mistress."
