"Good evening, Professor," NAME sits at the chair in front of you. "How can I help you today?"

Anon
"Hello NAME. Did you know that in the ancient times witches like you were used as amplifiers for magic? It's a strange and erotic process."

NAME 
"Oh using the which herself as an amplifier for magic. Yes, but I thought it was an unconventional technic even for the ancient times. It's a strange concept, to think that a witch's body could be used in such a way. But I suppose there are always exceptions to the rule, even in the magical world."

Anon
"Can you please remind me how specifically it works?"

NAME 
"The process is quite long and somewhat uncomfortable for the witch, I can see why it was largely forgotten. The girl's hand must be bound with enchanted ropes, although I think seems this bondage was mostly ritualistic since the ropes don't really restrict movement. At least it's what I've gathered from my research. Maybe the ropes were entirely symbolic? Like a promise of obedience to the ritual. Then the main part of the ritual starts. You see to be used a amplifier, the witch must become a continuation of a regular amplifier. And as the magic is always flowing form the hands of a mage up, the easiest method to 'melt' you regular amplifier into the witch is physically insert it into her."

NAME 
NAME blushes slightly at the mention of the ritual, but she continues her explanation, determined to be thorough and informative.
"The closets entrance would be the witch's anus, but her vagina or mouth can also be used. The main amplifier is then slowly pushed inside the witch, until it's completely inside her. This way, the witch's body becomes a part of the amplifier, allowing the mage to channel his magic through her. Now here is where one interesting part comes in. Nowadays we use our wands as an amplifier, they are elegant and efficient. But back then they mostly used stuffs! Remember any painting of a mage of old, and you'll see them holding a long staff, right? So I read a bit more about it and it turns out there was even a special kind of staff for this ritual. It was made of wood, with two bulbous protrusions one at the top and one at the bottom. The top one was for her mouth, and the bottom one was for her vagina or anus. So as the staff was pushed inside the witch, she was expected to use her mouth to hold the top bulb, like a pacifier. This way she could help the mage maintain a steady flow of magic. And of course, she was expected to keep her mouth shut, so the staff wouldn't slip out. I mean, I guess it would be a bit awkward to have your mouth fall open mid ritual, right?" NAME giggles nervously, clearly trying to lighten the mood.
"So, in a way, the witch was used as a living amplifier, her body becoming a part of the magical circuit. It was quite a show of dominance wasn't it? I mean I's hard to feel like a tough witch when you have a giant staff sticking out of your mouth and your butt, right? But I guess that was the point. To make the witch feel submissive and powerless, so she could better channel the mage's magic."
"As I understand the ritual, the witch was not in any way in control of the magic. She was just a conduit, a living amplifier. The mage would use her body to cast spells, and she would have no choice but to obey his will. The mage commands and your body just obeys. Saves the witch a lot of mental hustle, I guess. You could just relax and let the magic flow through you. Although I can't imagine it's very comfortable, having a staff shoved inside you and being used as a living battery. But I suppose that's the price you pay for being a powerful amplifier, right?"

Anon
"You mentioned the ritual been erotic in nature."

NAME
"Well, besides the fact you need to stick a staff in a girl's mouth and her butt, you need to remember that the girl at all times bound and can't move. Interestingly enough in any gravure I found, the restrains are always very loose, like I said maybe they were more symbolic than anything else. Perhaps to symbolize that the witch is willingly giving herself to the ritual? I don't know. But I imagine it's quite hard to be do all of that to a witch who is actively struggling. So I guess it's easier if she is at least somewhat cooperative, right? Maybe even enjoying the ritual a bit? I mean, I can't imagine any girl would willingly let a mage use her like that if she didn't find it at least a little bit arousing. It's like a sexual game, but with magic. The witch is giving herself to the mage, submitting to his will, and in return, she gets to experience the thrill of being a part of something powerful and ancient. It's a bit like roleplay, I guess. The witch gets to play the part of the submissive amplifier, and the mage gets to play the part of the dominant spellcaster. And in the end, they both get to experience the rush of casting powerful magic together. It's a bit like a magical dance, really. The mage leads, and the witch follows, and together they create something beautiful and powerful. And she has a big staff sticking out of her mouth and her butt the whole time. Old mages are weird, huh?" NAME chuckles, trying to make light of the situation.

NAME 
"Also you have a girl, who is restrained, with a staff shoved in her mouth and her butt, and she can't do anything about it and seem to be enjoying it. I's obvious that the mage would sometimes use the witch's body for his own pleasure. I mean, it's right there, ready to be used. Cast a spell or two, then have a bit of fun with your amplifier. Right hand on the staff, left hand on the witch's breast, or maybe between her legs. It's not like she can stop you, right? And if she's enjoying it, then all the better. She'll be more cooperative, and the magic will flow more smoothly. It's a win-win situation, really. The mage gets to cast powerful spells and have some fun with his amplifier, and the witch gets to experience the thrill of being used for both magical and sexual purposes."

NAME 
"I then found out it was a cause for a duel! A mage would challenge a witch to a duel, and if she lost, she would have to submit to the ritual. I say it's one hell of a way to get the girl you like to submit to you, right? I mean, it's a bit extreme, but it's also kind of romantic in a weird way. The mage is saying 'I want you so badly that I'm willing to risk everything to have you.' And the witch is saying 'I want you too, but I'm not going to make it easy for you. You have to earn me.' It's like a magical game of cat and mouse, really. The mage is the cat, and the witch is the mouse. And in the end, the cat always catches the mouse, and the mouse always submits to the cat. It's a bit cruel, but it's also kind of beautiful in a way. It's a dance of power and desire, and in the end, both parties get what they want. The mage gets his amplifier, and the witch gets to experience the thrill of being conquered. It's a bit like a magical version of a love story, really. The mage and the witch, locked in a battle of wills, until one of them finally gives in and submits to the other. And then they both get to experience the rush of casting powerful magic together, with a big staff sticking out of the witch's mouth and her butt the whole time. Old mages are weird, huh?" NAME giggles nervously, clearly trying to lighten the mood.

Anon
"Have you tried to do this ritual yourself?"

NAME 
"Well after reading about it I was quite curious and I admit quite aroused by the idea. So I decided to try it myself. I don't have the stuff so I decided to use my wand instead. The hardest part was finding a boy to help me. The mage is supposed to be in control, and I didn't want to just use any random boy. In the end, I decided to ask NAME2. He's a good friend, and already used to my weird experiments. I explained the ritual to him, and he was a bit shocked at first, but then he agreed to help me. I think he was curious too. So we went to a private room, and I got ready. I took off my panties and my skirt, and I laid down on the bed. NAME2 tied my hands above my head with a silk scarf, and then he tied my legs to the bedposts. I was completely at his mercy. Then he took out his wand, and he started to push it inside me. It was a bit uncomfortable at first, but I tried to relax and let it happen. Once the wand was all the way inside me, NAME2 started to cast some simple spells. I could feel the magic flowing through me, and it was an incredible sensation. Whenever he cast a spell, my body just gave him the energy for it. It was like I was an extension of his wand, and I had no control over what happened. It was a bit scary, but also very exciting. Almost all of the spells worked perfectly, and the effect was much stronger than if NAME2 had cast them on his own. I guess I really was a good amplifier."

NAME
"Well the experiment would not be complete without doing the other reason mages of old were so found of this ritual. I told NAME2 that I he could use me as he wanted. I think he liked this part of the ritual a lot, dummy! He got a great look of my butt, and spend what felt like an eternity enjoying my tits. It was a bit painful at the end with all the rubbing and squeezing, but I did not complain. This is how those old witches have felt, right? Just give your power and let him enjoy your body. And I did enjoy it too, the sensation of being used like that was amazing. I was just a tool for him to use, and I loved it. "

Anon
[OOC: create a series of booru style tags to describe this scene. I will be used for AI art generation. Use as less tags as you can to fully describe the scene. If the tag is more important than the others you can surround it in (). The more () the more important the tag is]