Author's Note: I chose Prue third for two reasons. First, she is the original third sister and second, because I think she is sexier than Paige. I will address Paige in a subsequent story.
I was feeling pretty sure of myself. I had just returned from my master's region. The images in my mind were still of Piper being restrained as Phoebe had been, only my Master had "completed" Piper in a different position. While Phoebe had been naked on her back, my master had bent Piper over a wooden table. With Piper's hands bound and pulled up above her back suspended by a small chain. Her gorgeous trim legs had been manacled to the legs of the ancient sturdy table. Piper had nothing on except for a pair of black stiletto heeled shoes with a three inch metal heel.
My master had taken the Aurora Chalice, and inserted it deep into Piper's throat while holding her hair. I was always turned on when the Aurora Chalice invaded and enlarged Piper's or Phoebe's mouth. Once the Aurora Chalice had grown down Piper's throat, my master asked me to insert the second chalice, which I had learned was named the Zenith Chalice, into her cunt and push it in as far as possible. My master wanted to make Piper a little more uncomfortable than Phoebe had been. Once the Zenith Chalice had grown to its maximum size into Piper, I handed the chalice to my master who let Piper's head down on the table.
My master started to chant and both chalices started to glow again. Piper's mind became hers for the last time and she strained hopelessly against both the chain holding her hands and the table legs. My master paid special attention to the chalice in Piper's cunt and seemed to be not only pushing it in farther, but moving it excruciatingly from side to side as well. My master had lost several servants to Piper and she wanted to exact some small revenge. The glow seemed brighter this time and I realized that Piper's metal heels helped conduct the energy so that it was pulsating through Piper's body at an accelerated rate. Her legs, which looked incredible in the black heels, would strain then relax, showing off her perfectly toned tan thighs. Her back would arch and she would try to come out of her shoes as my master took her to heights of pain and pleasure.
When the process was complete, my master gave me Piper. She had come countless times and had also screamed in pain just as many. Her body was shaking and she held onto me as if I was her last chance to survive the day. "I will do whatever you say Andromeda", she whispered. "I am yours."
My master looked at me and said, "You have done extremely well Andromeda. I am looking forward to completing the trio and having Prue under my hand. I can hardly wait to have that bitch under my control." She handed me a purple amulet. "Keep this at all times. While the power of three is gone forever, Prue is by far the most powerful witch. This will protect you from almost all of her powers. But do not become overconfident. Do not play around with her. Once you have her, do not dawdle. Convert her and bring her to me. I will be very generous once you have all three." And her hand rubbed my human formed member for the first time.
Yes, I was feeling pretty confident despite my master's warnings. I had converted two of the Halliwell sisters without much trouble. Upon returning to my San Francisco apartment, I immediately put my two slaves to use.
At this moment, Piper is on all fours with nothing on but a pair of black stiletto heels. Her hair is in a ponytail tied tightly behind her head. My cock is in her throat and I have a leash in my hand that is connected to her black collar. Her eyes are looking at me with both lust and helplessness. She is desperately trying to get all of my cock in her mouth and throat and at the same time is in the throws of heat.
Phoebe is behind her sister with a strap on that is nine inches in length. Phoebe has ahold of Piper's hips and is grinding in and out of Piper. Phoebe looks ravishing. Her long hair is flowing around her face and her breasts are bobbing up and down as she continues to slowly fuck Piper. Her face is showing signs of lust, power, and glee at the same time. Her slim waist is moving rhythmically in and out.
Piper is moaning loudly in between the thrusts of my and Phoebe's cocks. I am getting close to coming in Pipers throat. I take my free hand and grab Piper's ponytail and pull her head closer to me and push my cock deeper into her windpipe. Her back arches as I unload an extreme amount of semen into her stomach. After four or five more thrusts I pull her head off my cock and pushed her head into the mattress.
"Phoebe, finish you sister roughly", I instructed. Phoebe took Piper's leash in her right hand and yanked Piper's head back. Still holding the leash, she grabbed Piper's hips anew and started to piston Piper's cunt with a fury. Phoebe had started to get a little more aggressive with her words as well. "C'mon Piper, tell Aaron how much you like this".. tell him how much you like your little sister pounding your cunt".. tell him whore!..
Piper still had a little of my cum in the edge of her mouth. She was moaning louder and louder with each of Phoebe's thrusts. Finally, it looked like she had mustered enough strength to answer Phoebe, although she was just babbling. "Oh God! Phoebe, don't.. stop!, she gasped between her breaths and Phoebe's thrusts, "Yes!" finish me!!now!!! God!!!..NOWWWW!!!! Both sisters were sweating as Phoebe invaded Piper with increasing intensity. As Phoebe pistoned her sister, Piper looked skyward and let out a low intense howl and collapsed on the floor.
After Piper came back to consciousness, we devised a plan to take Prue. I must admit, I was both excited and nervous. Prue was the oldest and by far the most powerful. Not even my master knew her full capabilities. I knew we had to be ready for most contingencies. Often, as I would fuck Phoebe or Piper in the meantime, I would fantasize about Prue. Parting her legs... Making her moan... Watching the chalice stretch her mouth....
I decided to wait for about three to four weeks. Enough time to let Leo's disappearance sink in and let Prues guard come back down a little bit. For the first seven to ten days, Piper and Phoebe played the perfect girlfriend/sister. They displayed perfect amounts of grief, shock, franticness, and concern. By the beginning of the third week after Piper's taking, we decided one more week and we would take Prue. I had envisioned taking her in several positions. Stretching her mouth with the chalice, while giving her a good, hard, long fucking. Twenty five days after taking Piper, we were ready.
I thought taking Prue in her own house was risky, but she was still a little protective of Piper and Phoebe and I had taken great care not to be with Piper "too much". Piper, Phoebe and I would still have our long sexual sessions, but it had to be when Prue was not around or not even close to being around. We had to take Prue on our terms. Phoebe had pretended to ask me over for dinner with her two sisters. Phoebe was making Piper's favorite dinner and would also take care of phase I.
I ate very lightly so that I could stay quick on my feet. I had brought a desert wine that Phoebe served after dinner with an additive for Prue. As we talked in the front room she slowly became a little disoriented. She excused herself and wobbled right towards me. I grabbed her arm to steady her and she looked wide eyed to me as we touched.
