Crystal Collar Chronicles

Applejack stood there, watching the two dogs go at each other. From her perspective, Twilight’s dog was trying his best to impregnate her pet.

“Twi, when did you git a dog? And don’t you know better than to let him have a go at a female dog in heat? Although, I didn’t remember her being in heat.”

Twilight seemed to be at a loss for words, even as the male dog gave a final push and filled Spike with his puppy cream. “Oh!” she said, trying to salvage the situation. “Sorry about that! Yes, I got a new dog. But hey, it’s too late now, right? Let’s just leave these two at it. I came to talk to you!”

The farm pony nodded, and looked back at the two dogs, now knotted together. “What’s yer dog’s name, anyway?”

The alicorn blinked again, before finding her voice. “Spi… Spark! His name is Spark!”

With her body sated for the moment, Spike turned and shot a hurt look at Twilight. Applejack caught it, but didn’t really understand. After all, that was Winona, who was her pet.

Applejack just nodded to Twilight, and started walking over to the barn. “Sure, we can talk. I reckon there’s nothin’ to be done here. Winona havin’ puppies’ll be good for the farm. I’ll just have Fluttershy look at her later to make sure she’s okay.”

Twilight nodded, relieved, as she followed Applejack to the barn, leaving the two dogs alone. Spike could do nothing but watch them leave, as she was still knotted to Winona in her old, transformed body.

The two mares strolled into Applejack’s expansive barn. Since the last time it was destroyed, she had improved the design. There was a large bottom portion that was open for general storage of both feed and animals, as well as a series of individual stables in case they were needed. She had been getting the barn stocked up for her animals, so there was plenty of feed organized into different types.

The farm pony strode into the barn, asking her friend some questions. “So, you got new pet? Is your owl okay?”

Twilight tried to smile that looked convincing, even as the voices in her mind grew stronger. “Oh! Owlowiscious is just fine. I just thought a dog might be…”

Applejack cut the other pony off. “What’s wrong, sugarcube? You look different. And you’re nervous as a cat in a room full of rocking chairs. What’ve you been up to?”

The alicorn’s brittle smile widened into almost a manic grin. “Wrong? Nothing’s wrong, Applejack. Why would you think anything’s wrong? Nope! Nothing wrong here! Nothing at all!”

AJ shook her head, and gestured with her hoof. “One, you show up with a new pet out of the blue. Two, Spike’s not with you. Three, you have some weird collar around your neck. Four, your horn is all… weird. Five, you’re doing that thing where you panic when you’re lying. Something’s just not right. We should talk to Princess Celestia.”

The voices threatened to overwhelm Twilight now. They screamed inside her mind that she was discovered, and that she needed to do something NOW. She shivered. This was different than just putting Spike out of the way. This was one of her real, true friends; a bearer of the Element of Harmony, and someone she had fought many dangers with. But…

“Just put her out of the way,” the voices said in her head, trying to convince, rather than force. “You can explain later. But you can’t be discovered now. Put her out of the way.”

Twilight sighed once again, still unsure, but feeling she had no other way. “Applejack,” she said, as she approached the orange pony, “I have discovered something that can help your farm.”

Before Applejack could react, Twilight reached forward, and her glowing hoof brushed against her. The farm pony felt something wrap around her neck, and she looked down to see a mirror of the collar that the purple pony wore around her own neck.

“Twilight!” she yelled, as she reached up to try to get it off. “You can’t just collar me! What in tarnation are you trying to do?” She tried and tried, but even with her strength, she couldn’t budge it.

“Just… just relax. The Collar can help you, and help the farm. Just listen to what I have to say.”

Applejack stopped trying to force the collar, and became relaxed, just as instructed. “How is some sort of strange magical thing going to help my farm? And what is going on with you? Your horn is looking pretty weird.”

That was the second time she’d called attention to her horn, Twilight thought. She took a step over to a bucket of water and looked in, catching her reflection, now that Applejack was at least quiescent. As she did, she tried to explain.

“The Collar is good,” the alicorn said. “It makes whatever you want come true, as long as you’re focusing it on others.”

Her words cut off as she saw herself in the water. The reflection showed that Twilight’s horn had grown into a thin spire, closer in appearance to Princess Celestia’s or Princess Luna’s horn. But it looked off, as well, as the horn appeared to have strange bubbles in the keratin. Bulbous growths grew out of her horn at random intervals. There were only a few, and they weren’t large, but they were definitely there.

“What have you done to me?” she screamed into her mind, trying to talk to the Collar. “You’ve ruined my horn! I don’t like where this is going. I demand that you leave me, right now.”

The voices inside her mind grew louder. “But Twilight, think of the power you could have. You can help your friends. You can do anything you want.”

Twilight disagreed with the voices. “No. You said you would go when I told you, so I am telling you now. Leave. Begone,” she said to them.

The voices simply said, “As you wish,” and then went silent. She was surprised at how easy it was to get rid of them. She wondered if she had made a mistake.

Meanwhile, as Twilight was telling the voices to go away, no one noticed energy flowing between hers and Applejack’s Collar. But the farm pony definitely recognized that something was going on when voices spoke in her head.

“Applejack,” they said quietly, “I am the voice of the Collar, the one that Twilight said was good. You now have the power to help your friend and your farm. Merely say what you desire.” It explained the plan, and Applejack, having been told that the Collar was good, listened, understood, and agreed.

Twilight looked up from her reverie to see Applejack’s head cocked to the side, as if she was listening to something. As she was no idiot, she immediately understood what was going on. “Applejack! You…”

Applejack quickly cut her off. “No, no. I don’t want to listen to you yakking on anymore. Why don’t you just stay quiet?”

Suddenly, Twilight realized she couldn’t talk. She went into an instant panic, realizing that the power of the Collar had been turned on her. No matter what she did, she couldn’t say a thing. She started to ready a spell to get her out of here, to go to Princess Celestia, or someone else who could help.

“Nope,” Applejack said calmly, and quickly. “Give me that.” She reached up, and with a sharp yank, she pulled Twilight’s horn from her forehead. “Can’t have none of that. Just stand there and let me think.”

Just like that, the alicorn’s magic was gone. Her horn was gone. Sure, it was painless, but now - now she couldn’t talk, couldn’t do magic, and could only stand! She fidgeted nervously as she watched her friend pace back and forth.

Inside the orange mare’s head, there was a discussion going on. Everything the Collar said seemed perfectly reasonable. “You just sit tight there, Twilight. Just like you said, this is gonna help the farm, and you’re gonna help me too.”

Twilight, now only a pegasus, watched Applejack leave the barn with mounting worry.

Applejack looked around the farm for a while before finding Big Macintosh pulling in the last of the apples from the field. He had filled a large wagon full of them, but didn’t seem to mind the weight at all. He reached the middle of the yard where the barrels were kept, and stopped. He looked over and watched his sister approach.

She wasted no time on small talk, and immediately started talking after she got close enough. “Hey, Big Mac, I need you for a project. Might take a week or so, but I reckon it’ll help the farm. You up for it?” she asked.

Big Macintosh eyed his sister, and the collar she wore. He didn’t trust it much, but didn’t see any reason to disagree. “Eeeyup,” he replied.

“Great,” the mare said, and reached forward, her hoof glowing. Although Big Mac pulled back a bit, he was too slow. The glow touched him, and a large collar flowed around his neck.

“Alright, so you remember how Fergus and Millie left us a while back? Said they wanted to move out west, because they thought that grazing would be better? Well, you’re gonna be Fergus for a while, and I have a Millie waiting for you. So, let’s get you turned into a bull. We’ll start with your head. Just change your head to a bull’s head, and you should think you’re a bull too. A big, dumb, gentle bull.” She spoke plainly to the big stallion, following the voices in her head’s directions.

Big Mac looked panicked for a moment, but that passed quickly as his skull started to thicken, and his brain grew simpler. His memories of being a pony and an Apple were submerged, pushed deep inside his mind as new instincts and memories were created. New memories of being a bull his whole life, and that his name was Fergus bloomed within his mind. He knew he wasn’t smart, but his job wasn’t to be intelligent; it was to help around the farm with any tasks that he could help with.

His head widened, adding to its size. That size continued to expand as horns sprouted from the sides of his head, growing thick and pointed. As the horns grew, they pushed his ears down so that they pointed straight out of the sides of his head. The stallion looked at Applejack with dull eyes, as if wondering what he should do next.

Applejack nodded, pleased with the change. “Now, you’re sure I can change him back after we’re done?” she asked the voices of the Collar.

They responded, “Yes, absolutely. They are only as permanent as the holder of the Collar wishes them to be. As long as they wear a Collar, they can be changed. One the Collar is removed, they are locked in their form, but a Collar can always be re-administered.”

She was pleased. Twilight had told the truth. She could use her brother to get a foal or two, and then change him back. The farm would be saved.

Applejack examined his brother, who was having issues holding his heavy head up. “Oh, right,” she said. “Sorry ‘bout that. Anyway, you’re strong now, but you should be even stronger, and much larger. Your body should change to a big bull’s body. A lot longer, thicker, and stronger than your pony body.”

Big Mac’s body responded to the instruction as it first grew longer, then broader. He bulked up even larger than he had been before, and larger still than most bovines. There were a few pops and cracks as his chest broadened, and grew closer to the ground. At the same time, his hide grew thicker, and his fur became coarser. Muscles bulged under his skin, making him a sleek paragon of his new species. His tail grew longer, the dock extending into a longer, fleshy tail, while the hair grew rough, long, and tangled. The bull let out a moo of appreciation, looking back at his large, masculine frame. He flexed his muscles, and they rippled along his body.

As the big stallion grew larger, he felt more complete, more right with the image in his head. The twisting of his organs and muscles felt strange, but also felt like how he should have always been. It made the newly made bull eager, energetic, and horny.

The farm pony smiled, feeling pleased by her brother’s new body. “Almost there, sugarcube. Time for your danglies. You’re gonna need a bull cock with that bull body. Make your penis and balls a bull’s, and make ‘em extra fertile. You’re gonna need a lot of seed.”

Big Mac let out another moo, this time of surprise, as his shaft changed to fit his new species. There wasn’t a lot of change there, just a rearrangement of parts. The main modification was the larger balls, churning full of cum, just waiting to be used. As this last change completed, a spark moved from the bull’s Collar and touched Applejack’s. It glowed briefly with a green light, which faded quickly.

Applejack nodded in approval, and led the newly docile bull towards the barn.

Twilight, meanwhile, was scratching things into the dirt. She was trying to work out some methodology of getting out of here without any of her unicorn magic. She had already tried to take flight, but her wings refused to work due to the wording of the command. She couldn’t scream for help. She had spent a few minutes trying to reach for a rope with her mouth, in order to pull her out of her position, but to no avail; it was simply too far away. She looked up as she heard the barn door open, and she went white as she saw that Applejack was leading in a massive bull with a collar. She tried to say something, but of course, that didn’t work.

“Oh hey, Twilight,” Applejack said. “Big Mac here volunteered to help the farm out a bit. I know it’s not his normal job, but he seems real eager to get started.”

Indeed, the bull saw Twilight and seemed fairly eager. At this point, though, he was eager to fuck almost anything - Twilight, the hole in the wall, the bales of hay, the pail of water, the fence post - anything. The only thing he didn’t consider was Applejack. Twilight wondered why that was, but her thoughts were cut short when she released Big Mac in the direction of the purple pony. “She’s all yours,” she told him, but he was past listening at that point, running towards the terrified mare.

The bull ran past Applejack, as she took a few steps forward. As the horny cow moved around to reach a position behind the now-pegasus, AJ leaned forward, and whispered, “As Big Mac fucks you, become whatever he wants with each thrust. That way, he has a good mate, and we get a good calf or two.”

As Applejack stepped back, Twilight’s eyes widened at the statement. She kept mouthing ‘no’ over and over again, but it was no good at all. She couldn’t say anything, and even if she could, she couldn’t stop what was about to happen. She felt the weight on her back, and immediately collapsed under the weight. She was pressed underneath the bull, as there was no way she could handle that much muscled cow on top of her. She felt Big Mac’s cock start to probe under her tail, searching for the opening, and she tried very hard to move right and left to avoid it, but in the end, it found its mark.

Twilight let out a voiceless cry as the bull’s penis went in just an inch, and then, as if sensing that it had found its quarry, thrust deeper within. The angle was all wrong, however, as she was still pressed into the ground, unable to move.

That’s when Twilight started to feel the tingling.

It started first in her sex, where she could feel her inner walls growing thicker, her womb shifting her organs around to grow deeper within her body, becoming more accommodating that shaft that was seeking her depths. As she felt him thrust inside, she then felt the tingling spread to her legs. She tried to ignore the invader pushing its way inside her, but the sensations were growing more difficult to ignore.

Her body became stronger and larger due to the efforts and desires of the huffing bull, and she started to stand, at least a little. The weight was still enormous, but she no longer had the thin elegant legs of an alicorn; instead, they were the thicker legs and flanks of a bovine. Her whole skeleton had started to thicken up, and the flesh around it crawled and expanded.

That tingling became more intense, moving from her now complete cow sex and legs to her udder and body. She could feel her organs start to rearrange themselves within her, causing no pain, but plenty of discomfort. Her flesh crawled on her thickening bones, made to hold much more weight than before. Her teats expanded and duplicated, and Twilight could feel them lengthen almost to the ground, as her udder expanded at the same time. The flesh actually creaked at the rapid expansion, and the new cow felt dizzy from all of the changes in such a short time.

The dizziness kept going as her body reached its final configuration, though, as she realized the tingling had reached her neck and head. Already panicked, she really started to freak out, as the tendrils of change reached into her mind. The ongoing continual pounding started feeling good, then really good. She fought against the feelings that were pushing through her brain, trying to ignore them, but then a picture of Big Mac’s bovine cock pounding into her pussy started to superimpose itself over everything. She couldn’t concentrate, or figure anything out – it was just that picture, and the desire, and the feeling. It was getting harder and harder to think as her skull started to thicken up, and her muzzle widened. Every thrust into her, every lewd schurp as he drove himself into the horny cow, every sound as his heavy, fertile balls slapped against her enormous udder only served to drive her on, to push everything she was deeper and deeper, until only a cock-addicted, stupid cow remained. The last thing that happened was Twilight’s cutie mark finally fading into a black smudge on the cow’s flank, followed by a bright spark travelling from her Collar to Applejack’s. Her horn, now forgotten, lay in the hay in the corner of the barn.

As her Collar glowed with the addition of the spark, it grew in power, and started instructing Applejack what to do next. “Leave them to it,” the voices said. “You must find more subjects.” This time, the voices were not querulous, or plaintive – they were demanding. And they were obeyed. The Collar was done working for people, it now craved only one thing: more power. The farm pony’s mind was broken with the power of the Collar, now infused with magic from an alicorn.

There was a deep moo from the cow that used to be Twilight, as Big Mac finally released his seed into her womb. She shuddered with a long, hard orgasm, fulfilled in her purpose as a breeding cow. Big Macintosh filled her to overflowing, and his spunk ran down her legs and dripped onto the floor. The enormous bull, satisfied, stayed on the impregnated cow’s back for a while, before dropping off with a wet plop as his cock withdrew from her sopping sex.

Applejack trotted out of the barn, giving little thought to her friend now that she was completely in thrall to the voices in the Collar, in search of their next victim.