Trixie spun with a flourish to face the audience. “And there you have it, fillies and gentle colts. Yet another pair of satisfied customers, brought to the brink of bliss and pushed over the edge by none other than the Great and Powerful Trixie!” she proclaimed, once more amidst a flurry of sparkling fireworks. She seemed to really like that gimmick. “Who dares to be next?”

Twilight’s ears were on alert, but otherwise she didn’t bother to look as she scurried along the ground through the crowd. At long last they’d reached the edge of the stage, where a woozy Rainbow and Bonbon were lying in a heap right alongside Trixie’s latest volunteers.

“Rainbow,” Twilight whisper called and hurried up to her test subject/friend, pulling her free of the pony pile. “How do you feel? Does it ache? Are you smelling colors? Was your mane always like this or did you get it enchanted?” These and more questions flowed from the mare’s mouth as she ran her hooves all along Rainbow’s body.

“I… uh… who?” asked the cyan mare as she lay on her back. She was waving unsteadily, like she’d been hitting the salt lick for too long. “I was… he jus’,” she tried to explain as her hoof roamed around, unsure of where to point. “And then the thing jus’ went… bwah!”

“Riveting,” deadpanned Twilight.

“She doesn’t look so good,” noted Spike in concern.

“Hmm. No unusual signs of stress or injury,” observed Twilight as she elbowed Spike to resume taking notes. “And the magical signature is so faded it’s practically invisible. Definitely an unstable spell.”

Spike frowned. He’d lived with Twilight for long enough that, at this point, he didn’t have a choice but to understand magical theory and its implications. “How bad we talking?”

“I won’t know until we have more data,” admitted Twilight ruefully as she stared back at the stage.

Trixie cast her mysterious spell many more times on many more ponies as the hours ticked by. Twilight was able to see the flash of blue again, but only on every fourth casting. The results of the spell were growing more and more daring with what the ponies were willing to try. Each time the spell was cast and the performance concluded; Trixie would callously push the volunteer ponies off to the side, where Twilight was waiting to gather more data. Of particular note to Twilight was when her fellow elements were called up on stage.

Rarity had taken the stage with a regal strut, followed by a timid, orange, blank flank colt with a purple mane and tail.

“Speak, brave volunteers! Tell Trixie of your desires,” she said, more for the crowd than the volunteers.

Rarity gave her mane a bold flip as she narrowed her predatory eyes on the young colt. “It is my desire,” she purred, “to see this young lad bound and tamed like a proper pet.”

The colt tried to back away, obviously fearful of what this white devil had planned, but was stopped when Rarity snatched his tail up in her magic and dragged him back beside her. He was shivering like a leaf, unaware of just how much his apprehension was turning the mare on.

“You can do it, Tender,” called an encouraging mare from the crowd. “Mommy believes in you!”

“I, um…” stammered the shy colt.

“Speak plainly,” Trixie demanded impatiently, indifferent to the young foal’s anxiety. “Trixie can do nothing to appease your desires until she knows what those desires are.”

While that much seemed obvious, something about Trixie’s inflections made Twilight curious. She nosed at Spike, making sure he’d written down that part.

“I like… hair,” Tender finally answered.

“Pardon?” Trixie asked.

“Hair. I really like a filly with a soft, fluffy mane. It feels good when I wrap it around my cock.”

“Oh my,” cooed Rarity as she ran a hoof through the beautiful fullness of her mane. “Well aren’t you the lucky one.”

“Very well,” proclaimed Trixie. “We have a mare who craves for bondage and a colt who wishes to be bound by a mare’s hair.” The same song and dance with the spinning disk was performed and the blue unicorn fired her spell.

Rarity’s mane and tail began to grow. Both retained their well-groomed and sleek appearance, yet still grew and split off around her. “Oh dear. Wh-what’s happening?” She was starting to panic, only to find that her violet mane had picked itself off of the dirty stage floor. Rarity blinked in momentary confusion. Without saying a word, she began to think about simple shapes as she stared at her elongated mane, grateful that it had stopped growing. As she thought, her mane took on the shapes in her mind’s eye. After a few moments of testing, she grinned in devilish glee as the implications sank in.

“You see that?” Twilight whispered. “It’s a variation of the bring-it-to-life spell, binding her mane directly to her thoughts like an extra limb.”

“Cool! She’s just like the Maneiac!” Spike cheered even as he continued to write.

“I know, right,” agreed Tender.

“Shush,” hushed Rarity as a branch of her mane split off and wrapped around the young colt’s mouth, securing his jaw closed. “A lady’s toys do not speak until they are spoken to. Is that understood?”

Tender nodded nervously. He didn’t dare remove the bindings around his mouth.

With a hungered grin that made even some of the adults nervous, Rarity’s mane proceeded to spread itself across the little colt’s form like creeping, fabulous vines. They touched and tickled every square inch of his body, feeling him up. She paid close attention to the colt’s every twitch and sound, reading his sensitive spots as she meticulously explored.

Twilight analyzed that subject Rarity’s mane had truly become a living extension of the mare’s body. Based on how satisfied she looked, Twilight deduced that subject Rarity’s mane had been enchanted with magical nerve endings that sent signals directly to the subjects brain; the same as if she were using her physical body or especially attuned levitation. Spike mindlessly wrote down Twilight’s words, although his penmanship was a little off on the grounds that he couldn’t tear his eyes away from the scene and imagining himself in the colt’s place.

“There’s a good boy,” purred Rarity with a predatory glint in her eye. She released her grip around his muzzle, but continued holding him aloft. “Now, what would you like me to do to you?” She glanced down, indicating how she’d left his dick and balls completely untouched.

The colt moaned. “Oh Maneiac. You’ll never get away with this!”

Rarity blinked. “Pardon?”

“She’s a comic villain,” Tender whispered hurriedly. “She does this all the time whenever she captures the good guys.”

Rarity’s brow quickly rose with understanding. If this colt wanted to roleplay, a form of play she was quite familiar with, then she saw no harm in accommodating. Besides, even if she wasn’t familiar with the source material, the idea of playing a villainess seemed fitting. “Foolish colt,” she purred seductively, taking a step forward. “Who’s going to stop me?” Each step was slow and deliberate, her hooves making distinct *clops* against the wooden stage as she closed the distance. “You? Your friends? Your mother?” She gestured out to the audience where his mother was watching. “She’s abandoned you.”

“That’s not true,” Tender cried, struggling feebly. All the while he kept his eyes squarely on his captor. “That’s impossible!”

“Then why is she just standing there?” Rarity pointed. At the same time, the tendrils of her mane began creeping their way around the underage pony’s genitals, squeezing and flexing as her experimentation resumed. She gave a feminine giggle at the way his underdeveloped bits were twitching. “She’s not going to save you because she wants you here. Everypony wants you here.” Rarity had stopped with her muzzle mere inches from the colt’s. His breath smelled of pancakes. “Haven’t you realized it yet? You, my scrumptious little morsel,” she licked her lips, “are a sacrifice.”

“Noooo!” Tender whined. Whether it was him still playing along or a reaction to Rarity’s teasing was unclear. Either way, he was hard as a rock.

Rarity seized the moment, as well as the little colt’s genitals, in her mouth. She suckled like she was enjoying an especially sweet candy as a freshly hooficured arm reached back, around her rock hard cock, and between her hind legs. She’d considered using her new lifelike mane to tend to her own needs, but found the idea of cum on her quaff – even her own – to be utterly ghastly. Likewise, she ignored her throbbing erection on the grounds that it simply felt more proper to approach this situation like a lady. However, she did allow her quaff to tease at the base of the little colt’s shaft, balls, and anus for that extra stimulation.

A flurry of wordless sounds sputtered from young Tender’s mouth. Rarity’s mane was unbelievably soft, and the way it moved of its own accord sent ripples of electricity through his body. He tried humping forward into the moist cavern of Rarity’s mouth, but her mane refused to let him budge. He was utterly helpless, frustratingly so, but that only added to the excitement of the moment.

Rarity spared a single glance up at the colt’s face, perfectly timed to behold the moment when he realized what he really wanted. This moment, Rarity knew, would define this colt’s life forever more. For this was the precise moment that little Tender knew that he not only liked hair, but that he loved being tied up. Rarity grinned around her mouthful, thoroughly pleased with herself for creating another convert to her second most favorite pastime; right behind sewing and designing. The realization was almost more enjoyable than when the colt finally released his load into her mouth.

Normally, she’d berate such a pet for his rudeness. It was most uncouth to cum before one’s mistress, after all. However, given his little epiphany, Rarity decided to let this one slide. Even if she hadn’t achieved climax herself, this had been a thoroughly enjoyable experience.

The crowd cheered, as was only right when beholden to such a glamorous spectacle as herself. Rarity turned to Trixie with a questioning expression. Trixie just gestured for Rarity to take the colt over to where the others had been shuffled off. Fashion horse nodded, thanked Trixie for the service, and delicately sashayed her way off the stage with the colt still in her clutches. “Oh. Hello Twilight. Spike.” She gave a little wave with a mane tendril.

“H-hey, R-R-rara…” Spike trailed off, tongue tied.

Rarity giggled as she unceremoniously dumped the colt with the others, not even sparing him a second look. “What is that you have there, darling?” She indicated Twilight’s notes.

“Just some field notes,” Twilight replied distractedly. She asked Rarity many of the same questions she’d thrown at Rainbow, although marshmallow pony was much more coherent in her answers. As they spoke, Rarity’s mane continued to wave about in search of something to grab. More than once Spike had to back away before he or the notes could be snatched up. Likewise, Rarity had to take a few swipes at her own quaff to keep it from getting dirty by pulling up random plants or exploring the ‘used’ ponies off to the side. Eventually, Twilight got her fill and allowed Rarity to go.

Rarity departed cordially, flipping her tail up and showing off her glistening pussy and swinging testicles as she swaggered away.

When Spike felt it was safe enough, he approached Twilight. “Get anything good?”

“Possibly. So far Rarity is the only one to not have collapsed in exhaustion after the spell’s use, possibly because she’s the only one not to have orgasmed while under the spell’s effects. I can’t say for certain without more examples, though.”

As if on cue, Trixie once more welcomed forth a new pair of volunteers to the stage.

“Hi Big Mac! Hi Granny!” called Apple Bloom as she waved energetically.

“Good ta be here, ya’ll,” acknowledged AJ with a more conservative wave. She then turned to Trixie. “Alright, showboat. Mah sister dragged me up here ta see if yer half as good as ya are loud,” she informed curtly.

Trixie’s eye twitched, but she maintained her stage face. “Yay, verily! Speak your fondest wishes, sisters, and they shall be granted!”

AJ thought it over a moment, only to shrug. “Can’t really say there’s anythin’ Ah ‘specially wanna do that Ah can’t do any other time,” she admitted plainly. While that was the truth, AJ did have an ulterior motive. Honestly, she didn’t much care for this Trixie or her boasting. As such, while it would be dishonorable to actively sabotage the mare’s work, she also felt no obligation to make things any easier for the mare, either. “What about you, Bloom? Got anythin’ kinky planned?”

AB rubbed her chin in thought. Truth be told, she was in the same camp as her sister. She didn’t have much of a craving for anything beyond some nice vanilla face sitting or anal. She was, however, quite curious about the possibilities of using sex magic; something she’d read was a privilege enjoyed almost exclusively by unicorns and their lovers. And here was one such unicorn right now. It’d be a shame to waste the opportunity. After a while of thinking long and hard, she blurted out the first thing that came to mind. “Ah wanna be the big sister.”

“Do what?” Trixie asked and turned her head, flipping her ear up to hear more clearly. “Could you repeat that?”

“Ah love mah sister,” AB answered, “but sometimes it gets so frustratin’ always bein’ the short one. Ah wanna be the big sister fer a change.”

When Trixie turned to AJ, the older orange mare gave another shrug. “Fine by me.” Then, at Trixie’s coaxing, she added, “Ah wanna be the little sister fer a change, too.” Her tone was highly skeptical, making it clear to all she doubted that Trixie could actually make this possible.

Trixie nodded and turned bodily to face the audience. “So it is said. The small wish to grow tall and the elder wishes to return to a simpler time when she was smaller and more youthful.”

AJ’s eyebrow began a steady climb up her forehead. “Beg pardon?”

Trixie lit her horn, spun around on her little disk before returning to the ground, reared her head back, and tossed her head as if she was flinging the spell at the siblings. “So it shall be!”

The flash was much brighter than before. And when the light faded, the effects were immediately apparent. AB had gotten big. Height wise, she looked to be about the same as her sister; or rather how her sister used to be. AJ had shrunken to filly sized, compact and easy for transport. Twilight had to resist her urge to squeal at just how adorable her first Ponyville fuck had become. She also had to push out all thoughts of just abandoning her research to take AJ home and keep her as a pet; hugging her, brushing her, and maybe even calling her George. This was made easier as the more analytical side of Twilight’s mind began to take in certain details. AB might have been bigger, but her head-to-body ratio was the same as if she were still a filly. AJ’s body had also remained mostly proportional. The exception was her penis. Even though it was still in its sheath, Twilight calculated that AJ’s pussy stuffer was as big as it had been since it first appeared, which in turn made her smaller self look almost comically hung.

“What the hell?” AJ gasped. She was forced to adopt a wide legged stance to accommodate her unchanged male genitalia. Her mind was abuzz with questions as she took in her new, seemingly larger surroundings. “Did ya’ll just turn me inta mah brother?”

No one noticed it, but a red stallion in the crowd threw a hoof over his muzzle to conceal his chortling at his sister’s plight.

“Whoa,” awed AB as she spun around and looked herself over. “The ground’s so… far away.” She then wabbled a bit and had to widen her own stance to keep from falling over her elongated legs. “Who-wee. That’s a head trip,” she giggled.

“Behold, adoring audience!” Trixie shouted, waving a hoof to indicate her latest work. “The small have become tall and vice versa. Let us see what these lovely,” she said through gritted teeth, “country sisters shall do with these generously offered gifts.”

AB grinned down at her new, little sister. “Oh si~is,” she sang teasingly while fluttering her eyelashes.

“Now Apple Bloom,” cautioned AJ as she strained her neck to look up at her younger sibling. That look in the big filly’s eyes reminded apple horse a bit too much of fashion horse’s predatory glint. “We promised these good ponies a show, so Ah’m all fer givin’ ‘em one, but let’s not get carried away, ya hear?”

“Oh, Ah hear,” replied AB as she crouched down, flicking her tail like a cat ready to pounce. “And Ah know just what Ah want, too.”

AJ gulped and gave a squeaking, “meep.”

Twilight licked her lips as she stared almost unblinking at the show’s latest act. She was so consumed by the moment that she could barely even weigh the odds of what AB’s next move would be.

AB sprung like a predator, mane first as she bowled AJ over and onto her back. AJ gave a winded grunt, more surprised than pained by the action. AB then pressed her front hooves down on her big sister’s little chest, compressing just enough to hold her in place.

“Ya’ll know what Ah want, right?” AB said in a stage whisper. When the orange sibling just stared in confusion, AB just squatted her hindquarters down until her filly pussy was touching AJ’s sheath. “Ya’ll’ve been keepin’ this from me fer too long.”

“What are you talkin’ ‘bout?” AJ snapped back as she offered only a token resistance. She trusted her sister not to hurt her on purpose, but wasn’t sure if AB fully understood her newfound strength, or her sister’s lack thereof. “Ya’ll’ve had full access ta mah cock since the Slutty Sun Celebration.”

“Yeah, but only fer masturbation ‘n’ mouth stuff,” AB whined back as she began grinding along the sheathed phallus. “But any time Ah ask ya to put it in mah pussy, ya just say ‘it’s too big’ an’ that’s that!”

“It is too big,” AJ countered. “Just like Big Mac. Ya gotta be a big mare ta take the big dicks.”

Note to self, Twilight thought. Push up tests on the flexibility of magically granted futa cocks to see if they are as compatible with filly pussy as they are with filly throat and baby dragon ass hole.

“But now Ah am big,” AB emphasized, giving a slight moan as she felt AJ finally begin to poke free. She continued her humping, but arched her back to give herself a clear view downward to watch as her prize grew into the light. AJ’s cock was a darker orange than her fur and had an almost polished shine as it emerged from storage. “It looks wet,” AB commented. “Like ya’ve already been stickin’ it in pussy before we even started.” She licked her lips.

AJ’s eyes widened as she watched her cock continue to grow. She was only somewhat used to having this new equipment weighing her down and still preferred doing things the mare way most of the time. However, given her recent change in size, her cock seemed to weigh almost exponentially more than usual, pressing down on her barrel almost as much as AB’s hooves. It only seemed to get heavier as it grew. AB even had to adjust her hooves so to allow for the great and growing shaft to push past it’s owners chest. AJ watched with fixated awe and horror as the cock grew closer to her face, drooling a bit of pre as it neared. She felt a brief glimmer of relief when the one eyed snake moved past her face. But the relief of not being swallowed by the serpent was short lived when it just kept going.

“Thank Molestia,” the filly sized mare gasped when the monster between her legs finally stopped growing… several inches past her head. It was thicker around than her own legs and she had to adjust her head to see around it. “Y-ya see. This is what Ah meant,” she asserted, trying to reclaim some control over the situation. “This thing is even bigger than mah body. Your body. You’d never be able to handle it!”

Alarmed, Twilight quickly summoned a copy of Apple Jack’s dossier from her private file cabinet. She skimmed until she found the part mentioning the size of the mare’s cock, made a quick mental measurement from what she could see, and gasped when her latest hypothesis was confirmed.

“Twi?” Spike asked.

“It’s… bigger.”

“… wat?”

Twilight said nothing as her eyes remained glued to the scene on stage. However, she did shove both the dossier and her calculated measurement of AJ’s cock into Spike’s face. He found the discrepancy immediately. “Hold on,” he whispered. “Were Rainbow and Rarity bigger, too?”

“Don’t think so,” Twilight muttered. “It could be that the spell’s specific targeting of size changing had an unexpected reaction to AJ’s magically gifted phallus. What is this magic that the results are so random?”

AB grinned. “But now Ah am big,” she informed, letting her body drop a bit to completely eclipse AJ in her shadow. “Ah’m big. And yer…” she trailed off a moment as her attention turned to her sister’s penis. She used a hoof to bat at it, watching it sway and twitch. The big filly giggled. “Yer a lot smaller than Ah thought.”

AJ winced from the blow to her pride. No one had ever had anything derogatory to say about her body before. She might not have been a fashion model, but years of honest labor had sculpted her body to the pinnacle of earth pony standards. The sensation of the injury actually caught her off guard, forcing her to consider how she viewed her new anatomy as part of her.

AB, ignorant of her sister’s sudden existential crisis, wrapped a hoof around the orange penis and lifted it up. “It’s… warm,” she said as the masculine scent tickled her nose. Her body was growing warm as well and she could already feel the moistening of her pussy begin to leak around the cock’s base. “And it smells real good, too,” she appraised as she blew a soft gust of cool air over the tip.

AJ gave a mewling whine from her sister’s teasing. “Alright, fine,” she conceded. “Yer right.”

“Sis?”

“Ah said yer right,” AJ conceded as she looked her sister over. “Right now yer big enough. Ya should be able ta handle this monster.” She pressed her own hoof up towards her looming cock. “And Ah’m sorry Ah made ya feel so neglected ‘efore. Ya know Ah jus’ don’t want ya hurt, right?”

AB’s grin grew softer as she stared down at her elder sister. Her eyes gleamed with affection. Rather than saying anything, she chose to show her understanding by pushing the penis aside and pressing her lips against AJ’s. The crowd cooed at the sight of sisterly affection, and then made much lewder sounds of approval when AB started using her tongue.

Twilight seized this lull in the action to check over the notes Spike had collected thus far. However, AJ’s moans of delight at being dominated by a much bigger mare were giving Twilight ideas. She scribbled a memo off to the side, reminding herself to explore size changing magic later on.

“Let’s do it,” AB declared excitedly. When AJ nodded her consent, the big filly lifted herself up to all fours and took a few steps forward. The penis tickled across her belly and between her undeveloped teats. She then angled herself for the best view backwards as she took aim.

AJ tried to help, but even the use of all four hooves made little difference to such a towering piece of meat. “Heh. Maybe Ah should ask Big Mac fer pointers on how ta handle these things,” she said, only half joking. Another dollop of pre dribbled forth from her slit, pooling and threatening to drop down onto her fur. AJ was breathing heavily as she stared up at the mighty oak looming overhead. It was hard to believe this thing was actually hers. She hoped whatever magic was behind this bizarre transformation would wear off before she had to go home.

Seeing that her sister was of little help, AB decided to grab AJ’s cock herself and get it into position. Even with her change in size, this was still the longest cock she’d ever taken, proportionally speaking. Finally, with the flat head practically kissing her little filly pussy, AB sucked in a hissing breath and began lowering herself down.

“Sweet alicorns, preserve us!” gasped AJ as the tip entered her little sister’s winking pussy. Somehow this felt different than all the other pussies she’d tried since getting a penis. As she sank in another inch, she envisioned in her mind’s eye just what AB’s foal hole was like on the inside.

“Yer shakin’,” observed AB in amusement as she continued to drop her back end downwards. AJ was stretching her out in ways no cock ever had, not even Spike’s. It filled her in a way that no sex toy could match.

AJ grunted a snicker. “Ah’ve explored yer tight little pussy with mah tongue so much Ah could probably find mah way around in the dark if Ah had to.” That got a laugh out of both her sister and the audience. She hissed again when AB dropped down another inch. “But this is different.”

“Ah know,” AB agreed breathlessly, tensing as her vaginal lips brushed across her sister’s medial ring. Both paused to catch their breath. “It’s like… different, ya know?”

“Yeah,” AJ agreed with a nod. “Different.” Her cheeks were flushed bright red and she reached out to her younger sister’s hooves still planted to either side of her little body. She needed something to hold and was overcome with a strange urge to be close to her beloved sibling.

“Different how?” Twilight grumbled to herself. Spike couldn’t write anything down if details weren’t being offered.

“Ah feel it.” AB touched her hoof to her belly, indicating a fairly distinguishable bulge. “Yer in me, so deep,” she gasped in elation. This was the feeling of intimacy that could only be shared by siblings fucking, and she loved it. She lost her grip when a hoof slipped on some jizz left on the stage, causing her to slip and drop the rest of the way down.

“Oof!” AJ grunted.

“Sis!” AB called out in alarm, suddenly fearful she’d hurt her sister.

“Nah. Ah’m good,” AJ assured. “Ya missed mah balls, thank Molestia,” she giggled nervously. Then it hit her. “Oh shit, Bloom. Yer… big! Like… Ah’ve gone balls deep in mares ‘efore, but none ever felt so… big.”

AB giggled with relief and straightened up. Her every move, even the act of breathing, made her acutely aware of the tremendous object filling her fillyhood and spearing into her chest. “Ah think Ah know what ya mean, sis.”

“Be nice if you could share with the rest of us,” muttered Twilight. These two were clearly having some sort of moment, possibly an empathic connection forged through their fused genitals, and it was just so inconsiderate of them to not give her the details she needed.

“Ah think Ah’m ready ta start movin,” AB finally said.

“Go fer it.”

With a nod, the large filly lifted her hindquarters up. She gave an extended moan as she felt the hot cock flesh slide slowly along her vaginal canal. The texture was amazing, made all the more intense by the knowledge that it was her own sister’s penis causing such pleasure. Wordless sounds escaped AB’s mouth as she dropped herself back down. The resultant friction caused her already hot pussy to burn even hotter.

“Oh fuck, li’l sis,” grunted AJ. “Ah can’t believe a pussy this tight is on a filly so big.” It took a bit of effort, but she managed to buck her hips up in time to meet her sister’s falling rump. It may have been the least she could do, but she had to do it. “It’s like yer some delicate little virgin ‘r somethin’.”

“Who you callin’ a virgin?” AB snapped back. She began quickening her thrusts while gyrating her hips. “Ah learned this trick by practicin’ with dragon cock! Could some dumb virgin do that?”

AJ gave a toothy grin at how easy it was to rile up her sister. “Guess not,” she praised. “Mah little sister’s growing up ta be quite the experienced slut.”

“Damn straight!”

“Mine’s jus’ the first,” AJ grunted as her hips continued to meet AB’s. “Yer gonna take all kinds o’ cock. Ponies round the world are gonna come ta get a piece o’ that sweet pussy.”

“Fuck yeah, they are,” AB panted out. She dropped her upper body down until her chest was compressing her sister’s. She’d decided to change tactics from long, extended thrusts to the short and rapid variety. AJ’s cock was so huge that either way filled her up. But at least this way would help to save energy.

“Ya really are an experience whore, aren’t ya,” AJ gasped in praise. “Glad ta hear at least some o’ mah lessons stuck.” It was harder for her tiny hips to move in this position, but AJ still did her best to meet her sister’s humping with her own. “C-close,” she warned.

“Me too,” affirmed AB. She interpreted AJ’s hooves on her thighs as the final signal and dropped down fully. AJ came first, shooting what felt like at least a gallon directly into her womb. The big filly came almost immediately after and sprayed her own juices all across where she and her sister joined. AB felt tired, a lot more so than she usually did after sex. She managed to aim her collapse just off to the side so that AJ didn’t get smooshed.

AJ panted beneath the big filly’s weight. It felt like an entire day’s work had been concentrated into just a few minutes, making it hard for her to breathe. The task was only made more difficult with the weight of her little sister almost crushing her.

“And there you have it, ladies and gentle colts!” Trixie shouted, taking center stage and blocking the pair. “Truly Trixie’s powers are unmatched, and there can no longer be any doubt of her greatness. Speak, brave ponies, and know that your fondest and most perverted wishes shall be granted.” As she spoke, a magical construct shaped like a broom carefully swept the spent sisters off the stage and dumped them into the pile with the others.

Twilight and Spike went to see to AJ and AB respectively. The sisters weren’t hurt and there didn’t seem to be any magical damage. However, both were exhausted beyond what seemed reasonable for only a single orgasm. But perhaps that was it. Whatever Trixie’s magic was doing, it must have been tied to the ponies the spell was cast upon, particularly their orgasms. Rarity’s failure to climax and collapse seemed to back up this theory. Checking on her earlier subjects, Twilight felt a bit of relief at seeing Bonbon’s teats having shrunken down by approximately 17% of what they had been. Hopefully full recovery would follow the magic’s dissipation. However, all of this still left the hanging question of what this mare was doing. More study was called for.

***

Trixie’s show went on for several more hours until the sun began to set. Her earliest volunteeres had recovered enough to woozily move on their own, but the rest still lay discarded in their little pile. Several ponies were making a pretty bit selling concessions to the crowd and Trixie had filled several hats with donations. However, amidst all this, Twilight was frustrated to the point of bursting at having failed to come up with a decent hypothesis. Then, as if out of nowhere, she was struck with an idea. “Spike. You should volunteer to go next.”

“What? Why me?”

“Because she’s only been casting this spell on ponies so far. If she has to change things up to work on a dragon, maybe that’ll shake her up enough and I’ll finally spot a pattern in her matrix. Besides, this’ll be her fourth casting since the last flash, so you should be in prime position to get a better look.”

Spike groaned and kicked at the dirt. “Seriously, Twi? Why do I always have to be the guinea pig?”

Twilight grinned and whispered in his ear. “Because I bribe you with the rubies I plan on picking up tomorrow morning.”

Spike tensed. “R-rubies?”

Twilight nodded and blew gently into his ear. “Drenched in chocolate sauce.”

A small fountain of drool flowed forth from Spike’s mouth before he managed to close it. “You make a persuasive argument, Twi.”

Twilight beamed and rewarded her assistant with a long, slobbery smooch to the cheek, the kind that made him reflexively pull away in disgust. She loved teasing him like that.

Spike ran back to the front of the stage and started hopping around to get Trixie’s attention. “Hey. Over here. Pick me!”

“You!” Trixie said, pointing down at Spike. He pumped his fist in victory and waddled onto the stage. “And, let me see here… You!”

“Oh, um, if you really want,” whispered Fluttershy, almost too quietly for anyone to hear as she shuffled meekly onto the stage beside Spike.

“Hey Fluttershy,” he greeted kindly and set a claw on her foreleg. “You doing alright?”

Fluttershy beamed gratefully at the cute baby dragon. “Better, now that you’re here.”

“Tell me, brave volunteers!” proclaimed Trixie in a loud enough voice to make Fluttershy squeak and hide behind Spike. “What carnal delicacies does the Great and Powerful Trixie have the pleasure of preparing for your consumption this fine day?”

Fluttershy muttered something.

“What was that?” asked Trixie.

“She likes animals,” Spike said, relaying Fluttershy’s message. “Something cute and,” he waited for her to finish, “preferably young.”

“Ah. So this petite mare has a fondness for young beasts, does she?” asked Trixie with a dramatic sweep of her cape. “And what about you, uh, little lizard… thing?”

Spike narrowed his eyes on the mare. “Dragon. I’m a dragon,” he growled. “And I, uh…”

“Yes?”

Spike chuckled nervously. He hadn’t actually thought this far ahead. As far as he knew, he didn’t really have a particular fetish like the one’s he’d seen. The drake knew he liked mare cock up his ass, but didn’t think that really counted, especially when Fluttershy was already a futa without the aid of additional magic. Besides, Twilight was counting on him to throw this Trixie a curve ball, something big to throw her off her game.

“Well, Trixie is waiting,” she informed impatiently.

“Okay, fine,” he groaned. “How about, uh, giantess?”

“Yes,” whispered Twilight, doing her own victorious hoof pump. Something like that would definitely throw Trixie off. Even Twilight had a hard time thinking how something like that would mesh with… an… animal. Twilight’s pupils narrowed to the size of pinpricks. “… uh oh.”

“Let it be known across the land that this young lizard enjoys the largeness of females, while this mare hungers for the youth of beasts.”

This time, when Trixie started spinning, Spike was finally able to see the flash. His keen eyes were able to make out that it was a flask, something small with a blue liquid inside; probably a potion. Also, his nose was able to pick up an oddly earthy smell over the otherwise overwhelming musk of sex and arousal. He figured it had to be coming from the potion. As Trixie stopped spinning and readied to cast the spell, Spike was distractedly concentrating on the smell of the potion, racking his brain on where he’d smelled it before.

The spell hit, engulfing Spike and Fluttershy in a brief glow, only to surprise all when a beam shot straight up, hovered like a firecracker that had forgotten to crack, and suddenly streaked off towards the Everfree.

“Um, what was that?” Fluttershy asked after several minutes of nothing.

Her question was echoed by much of the crowd. Even Trixie’s confident smirk began to wane. Then, just as the mare had opened her mouth, hoping brilliance would strike and assure everypony that all was well…

*Thum*

The ground shook as if from a small quake, startling the crowd.

*Thum*

There were fearful murmurs from Trixie’s audience as ponies started backing away. A flock of birds in the forest took off, shrieking in fear as another *Thum* shook the ground.

“Uh oh,” Fluttershy said.

“Fluttershy.”

“Yes, Spike?” she asked as both had their eyes trained on the distant source of shifting trees.

“What are the birds saying?”

The yellow mare gulped and relayed the message with quiet dread. “Fly for your lives. The beast has awakened, and it hungers.”

Author's Note

Cliffhangers! Haven’t done one of those in a while.

This was a tricky ordeal to write. We explore a few fetishes – which is starting to look like a theme for this story as a whole – using Trixie’s ‘sex magic’. Based on the chosen scenes, and depending on what fanfictions you might have already read, many of you have probably already discerned the trick behind Trixie’s casting. Anyhow, we also got a little glimpse as Sci-Twi once her analytical side takes over while Spike does his best to support her endeavors. Fun times all around.

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