Crystal Collar Chronicles

That night, her dreams were even more intense than the night before. Twilight dreamed strange, intricate dreams, drenched with sexual innuendo. Over and over, she would see ponies warped into strange abominations, changing gender, species, and much more. Sometimes, the creatures weren’t even recognizable things afterwards, their bodies twisted into such a layered monstrosity from repeated transformations that not only was their former shape lost, but their current shape was completely unrecognizable.

It felt like she drifted through this landscape for a long time, seeing these creatures in these various states. After a while, however, she started seeing more normal creatures – but these creatures didn’t stay normal for long. Now, she could see the transformations occur before her eyes, ponies, gryphons, animals, and more shifting their shapes, and screaming or moaning in turns as their forms were lost. She realized that the Collar was doing this, and… it felt good. Very good, in fact. Each pony shifted made her feel that much better, that much more excited. And that excitement grew into sexual excitement.

Near the end of the dream, she was voluntarily changing ponies into the most bizarre things she could think of, her sex dripping more and more with each transformation. The Collar was merely assisting her now, as each act was performed by her own free will. The line of random ponies changed, and now she was transforming ponies she knew around town. Finally, she saw her best friends at the end of the line, but before she reached it, she woke up.

Twilight Sparkle woke up covered in sweat, her sheets stained with her arousal. She rubbed her head, which ached. Looking at the window, the sun was already up, and Spike hadn’t arrived to wake her up, which she was grateful for. She quickly got up, and cleaned everything up with her magic, erasing any hint of her nocturnal emissions. That headache was harder to deal with, though. She couldn’t really remember what happened last night.

“Good morning, Twilight,” the voices said in her head. It sounded like more voices now, stronger and clearer. “There is much to do this morning. We must prevent us from being stolen, and we need your help.”

Twilight was shocked. She’d had the Collar only a short time, and it was already in trouble! “Of course! What do you need me to do?”

“The problem is Spike. He is a dragon. Dragons eat gems and crystals. We are afraid that he would want to eat us. He must be taken care of.”

She was taken aback at the wording. “Taken care of? I can’t kill my friend! That’s horrible!” She reached up to try to take the Collar off, disgusted by its request.

“No, you misunderstand. We do not wish you to kill Spike. We just ask that he be put out of the way. In the process, you can help him.”

Twilight cocked her head to the side as she listened to what the Collar had to say, her hoof dropping back to the ground. The Collar whispered in her mind, and after a while, a smile spread on her lips. She liked the idea.

Twilight walked down the stairs, meeting Spike in the main hall of the library. “Oh, hello, Spike! Good morning! Did you take care of everything yesterday?”

Spike looked at Twilight, and saw the collar on her neck. He immediately became worried, remembering the discussion yesterday. He was beginning to be reminded of Trixie’s actions with the Alicorn Amulet. “Uhh, Twilight, shouldn’t you give that collar to the Princesses to be analyzed? I mean, you agreed to do that when we went on the expedition.”

Twilight just smiled. “Oh, of course! But I’m not finished with my own analysis yet. I did a lot of work yesterday, and verified that it’s not linked with Sombra. There’s no shadow magic in this whatsoever. It’s perfectly safe!”

Spike just watched his mentor uneasily, afraid of what might happen.

“Anyway, Spike, do you want to help me with a little experiment? I promise it won’t hurt at all, and may help your chances with Rarity.”

Spike’s eyes widened, the mention of Rarity driving out all concern and worry in his head. “Of course, Twilight! What do you want me to do? Anything for you and Rarity.” He was smiling with a somewhat dreamy expression on his face, thinking about all of the ways he could please her.

The voices whispered through Twilight’s mind once again, reinforcing their earlier discussion. “No witnesses.” She smiled brightly at Spike. “Remember on the other side of the mirror portal? Rarity really liked you when you were a dog. Do you want to see if that would work over here?”

Spike looked confused, and frowned. “A… a dog? Twilight, how would that help me? I would think I’d be more interesting to her on two legs, not four.”

Twilight shrugged. “Well, she definitely loved you over there. Buuuuut… if you’re not interested in Rarity, that’s completely fine. Perhaps you’ll find somepony else!”

The dragon made a small strangled noise. “No! No! Of course, I’ll try anything to be with Rarity and have her notice me!”

Twilight nodded, as that’s all she wanted to hear. She walked over to the small dragon. “Now, dogs have collars. This will help you act the part.” Before he could protest, she touched his neck with her forehoof. The Collar around Twilight’s neck glowed slightly, and her hoof was covered with silvery green light. The light flowed around the dragon’s neck and solidified into a new Collar, albeit smaller. It was solid, with no obvious catch or latch on it to remove it. It simply appeared to have always been there.

Spike’s eyes widened at the mirror copy around his neck. “Twilight! What… what have you done?” He reached up and started tugging on the Collar, to no effect. He couldn’t even get his chin underneath it to chew on it.

“Oh, Spike, you worry too much. Just stop struggling and stand there,” Twilight ordered.

The Collar glowed, and Spike immediately obeyed. His mind was racing a million miles a minute, though. “TWILIGHT! STOP! HELP!” he yelled, hoping to get someone’s attention. But here in the library, no one could hear him scream.

“Silly Spike, everyone knows that dogs can’t talk. They just bark and whine, so you should just do that for now.”

Spike’s yelling morphed into the barks of a dog, as his eyes widened in terror. He started to whimper, knowing that his fate was now entirely in the alicorn’s hooves.

“Alright, so, the scales just have to go. You should grow fur all over your body. Let’s go with a deep brown color, with a white belly. I think that would look cute on you,” Twilight said.

The dragon’s scales faded into his skin. His headruff also sank into his skull. All over his body, little hairs started sprouting out through his new skin. It was patchy at first, especially until the scales all disappeared, but then it started growing in with more and more depth. After a few moments, he was covered with a thick coat of fur that wouldn’t look out of place on any canine.

“A dog needs a doggy tail, so that should go next. You should have a nice, waggy doggy tail.”

His thick dragon tail began to shrink down, and he started to feel unbalanced, tipping forward a bit before he caught himself. His tail diminished until there was just a nice, long dog’s tail, complete with fur. It wasn’t wagging, though. Not with what he was going through and feeling.

Every step of this process was increasing Twilight’s arousal. She was already about to drip down the back of her legs, and she wasn’t even done yet. “Hmmm, well, two legs simply don’t work for a dog. You need to get down on all fours, and you should just take the body structure of a dog. While you’re at it, grow some cute little paws, too. Hands are useless to dogs.”

Spike felt himself forced to the ground, humiliated by taking a quadruped’s stance. His hips and shoulders rearranged themselves to lock him into that position, and his arms and legs thinned out to match his new shape. His chest changed as well, barreling out as his stomach pulled in. The stomach he gained from eating all those gems was gone, replaced with a lean canine stomach. The final indignity was losing his hands. His thumbs were the first to go, as they drifted up his arms and became vestigial. His fingers became furry nubs, and his claws became the blunted claws of a dog. His neck cracked as his head tilted forward, pointing straight ahead. It didn’t hurt, as Twilight had promised it wouldn’t, but it felt strange… and very wrong. Much worse than it had been through the mirror. He barked and whined to let Twilight know about his terror, anger, and sense of betrayal.

“Oh, come on, Spike! Rarity will love this new you! Just a few more steps.” The mare was visibly growing more aroused. “Your head is all wrong; you need a dog’s head. Big floppy ears. But keep your mind intact, we wouldn’t want to lose that.”

The former dragon winced as he felt the bones in his head slide around, reshaping his head into a canine’s. His ear fins moved up and shifted into big floppy dog ears, rolling down his head in simultaneous motions. His muzzle lengthened, his teeth staying somewhat sharp, but not as sharp as they were as a dragon. His tongue grew long as well, and he started smelling a lot more smells with his new nose. The worst part then hit him – he felt himself lose something now that he was almost entirely a dog. There was a sense of his dragon magic, the inner magic that he always had since he was born, just… dissipating. It flowed out of his body, unseen to everyone. Everyone but the Collar, which pulled the energy into itself and glowed ever so slightly brighter. The feeling made Spike whimper once again.

Twilight shook her head. “It’s alright, Spike. You’re excited and happy about these changes!” She looked at him with a critical eye. “Oh, almost forgot… your equipment. You need a dog’s equipment down there. Just finish that off, and then we’ll go walkies. You should really have the form of a fully adult dog. After all, Rarity isn’t going to want to date a puppy.”

Spike suddenly felt happier, as alien feelings flooded throughout him. He didn’t have any reason to be happy, but he felt that way. And excited, too! What sort of adventures were in store? His tail started wagging, even as he felt the last dragon bit of him change, his malehood. It shifted underneath him, changing and molding into a dog’s normal sheath, with balls hanging behind. He felt himself get bigger and stronger as his muscles filled in and he reached adulthood. Something in his brain nagged him that all of this was bad, but he didn’t have time for that. He was going walkies!

The duo walked through Ponyville. A few ponies remarked on her new dog, and Twilight thanked them. For some reason, no one seemed to notice or at least comment on the collars on the pair, and that was just fine as far as the mare was concerned. It meant that she didn’t have anyone else to get out of the way. Part of her was feeling squeamish about the next part she was going to do, but it was important. The voices were quite insistent on that, and they were right. After all, they’d been so reasonable.

After a while, the two reached Apple Acres, and Twilight searched the fields, looking for something. After a few minutes, she found that she didn’t need to find the object of her search at all – it came to them.

Winona had streaked across the field when she saw the Princess pony, and was jumping up on her, excited to see her. After all, the pony always brought her pettings, and sometimes treats. But the male dog next to her was even more interesting. She hadn’t met this one before! Her doggy thoughts led her to sniff at him, including the standard sniffing at the rear.

Spike had lost some of the enthusiasm he had before, and now that he was part of this ritual with the smaller dog, he started to grow uncomfortable. This was just driving into his mind that he was really a dog now, not just temporarily one in another world. Twilight was giving him the eye, though, so he half-heartedly sniffed back at the bitch. She smelled interesting, at least. Some deeper, primal part of his mind started to activate in his mind, and he felt his cock start to loosen in his sheath. This was extremely weird for him, as he had never even gone through puberty as a dragon, but he was a full grown adult dog now, and had a dog’s needs. He pushed back against those thoughts, whimpered again, and backed away from Winona.

Twilight shook her head. “No, no. This won’t do at all. You just need more encouragement. After all, she’s going to be your best new friend.” As Winona looked to Twilight, confused, the alicorn reached down and touched her neck. Again, the silvery green light glowed around her hoof, and once again a collar flowed around the pup’s neck, solidifying in the same collar that she and Spike wore. Twilight leaned down and whispered to Winona, “You are going into heat now.”

Immediately, a warmth spread throughout Winona’s body, one she was familiar with. After all, she’d been through this sort of thing before. And hey, there was a male dog right here to help her! She ran around a bit, nipping at Spike, then rubbing against him, before finally just turning around and presenting herself to him.

The former dragon was panting in terror now. He could smell those incredibly enticing smells coming from the bitch in front of him, and tried hard to resist. It was difficult, though, but even though his doggy shaft was fully erect, he was able to prevent himself from jumping on her, no matter how much she wanted it.

Twilight frowned. This was not going the way she intended at all. They were supposed to run off and have puppies and be happy. Suddenly, she tilted her head, and that slow smile began to spread once again on her mouth. “Both of you,” she ordered, “Switch minds with each other.”

Spike’s mind was almost shattered as it found itself now in a completely alien body, flooded with hormones. Not only was he in a dog’s body, but he was in a smaller, different one that was also female! The emotions, instincts, and smells were completely overwhelming, and all he could do was just stand there, still presenting.

Winona, once transferred, was able to compensate much more easily. After all, she was merely an animal, and one who’s instincts were mostly the same as the body she just inhabited. She blinked a few times in confusion as her instincts to be rutted were replaced by instincts to rut instead, and then she took advantage of that to jump on the waiting bitch in front of her.

Spike yelped sharply as she felt the dog behind her thrust inside her wet, dripping sex. The waves of pleasure she felt drowned any thoughts of resistance, and when Winona bit down on her neck, it just made her feel that much more submissive.

Twilight nodded, pleased at the outcome. She stepped forward, and touched the collar of first Winona in Spike’s changed body, and then Spike in Winona’s body as the two continued their business. With each touch, the collar glowed and flowed back into her hoof, locking each of the two into their forms.

“Just what in tarnation is goin’ on here?” a voice asked behind her.

Twilight twirled around, and saw Applejack standing there, staring at her and the two dogs. “I… I… I can explain, Applejack…” she stuttered out.

Inside Twilight’s head, two words echoed: “No witnesses.”