Dash the Growing Griffon

by Swabhard

Rating: mature
Tags: Random, My Little Pony: Friendship is Magic, Fetish, Rainbow Dash, Porn, Sex
Length: 6602

This is fetish clop. Do not click if you don't want to read fetish clop. Rainbow Dash transforms into a griffon, and then grows bigger and bigger.

Rainbow Dash drinks a potion that turns her into a griffon. When "celebrating" her new body, she discovers the potion had a second effect... she's now on a growing rampage!

This story contains:
-Transformation
-Masturbation
-Growth
-Light weight gain
-Vore (non-digestion, just captive)
-Insertion
-Rampage (destruction)
-Unbirth

Published 2014-08-30 02:40:06 UTC
Last updated 2015-10-15 09:36:42 UTC

Chapter 1

Rainbow grinned to herself. Today was the day.

The prismatic pegasus flew silently above the deserted streets of early-morning Ponyville. It was perfect. First, she overhears Twilight dictating notes about her species-change potions, and then no more than two days later both Twilight and Spike go away to Canterlot on official business? How could things have been better? Now, Rainbow Dash would finally know what it was like to be a griffon!

Twilight should really have known better than to convert that spell into a potion in the first place, considered Dash as she approached the library. And she really should have fixed the window that doesn’t lock.

The blue pony finally reached the window in question and tugged hard upward. With a small jerk and the sound of scraping wood, she was in. Now to get to the basement and find the right potion! Rainbow grinned again. Another mistake, Sparkle, she thought. Letting other people into your private lab. And labelling everything so… nerdily.

And everything WAS labelled. As soon as Dash reached the bottom of the stairs and switched the lights on, she saw the box. “Species Altering Elixirs”, in neat hornwriting. Typical. The pegasus trotted over and started taking bottles out at random.

Breezie, donkey, earth pony… aha! Rainbow had been afraid that griffon wasn’t even one of the potions that Twilight had made, but sure enough, here it was. Dash triumphantly took it in her hooves, and, with a burst of wingpower, flew back up the stairs. As she left the library through the open window, a pile of notes which had been on the desk in the lab settled after their disturbance by Rainbow’s quick exit. The most recently dated paper lay forgotten on the floor. Had Rainbow been there to read it, she would have seen:

...but,needless to say, the potions have not been tested on any pony or other sentient creature. It’s difficult to predict, but my assumption is that only about a mouthful of potion would be needed for the transformation to take place, due to the concentration of the magic in a solution designed to hold enchantment so efficiently. The results of drinking more (or less) are completely unknown, though in the latter case it can be reasonably assumed to have no effect. In the former case, the potion’s strength would certainly cause something more drastic to occur, though the nature of said effect is impossible to predict. My next test will…

But, of course, she was not. So she didn’t.

***

Shaking with excitement, Rainbow Dash took the stopper off of the glass container. Safely in her home, and just in time for sunrise. Time to give this baby a try!

Not wishing to delay any longer, the pegasus (though not for much longer) threw back her head and gulped down every last drop of the potion. She noted that it didn’t really taste like anything, even though she had at least four or five large gulps to discern any flavour in the liquid. Rainbow waited excitedly for something to happen.

Sure enough, only a few seconds passed before Dash was lifted off her hooves in a burst of blue light. She closed her eyes as he body shifted weirdly, and then… she landed on the cloud floor.

Opening her eyes, Rainbow tentatively lifted a foreleg… and sure enough, there was no longer a cyan hoof on the end of it. Rather, a yellow bird’s leg ended in a set of wicked talons. Looking back, she saw her neck and back covered in white feathers, until they ended and gave way to short fur of her regular colour. Her wings were much bigger, but otherwise looked more or less the same. The big difference was her tail; no longer a pony’s tail, but rather a long, waving lion’s tail ending in a tuft of her signature rainbow hair.

Turning her attention to her head, she noted how different her face felt. Rather than a herbivore’s muzzle and flat teeth, she felt a strong, hard beak with a sharp tip. It felt weird, but cool in a way Rainbow could only really think of as powerful. The same went for her talons, which she flexed as she stretched out her new body. Her back paws unsheathed sharp claws as she tested her extremities.

Oh, man, this is AMAZING! I have to know what I look like. She rushed to her upstairs full-body mirror, noting that her body felt STRONGER as well. The lion’s side of her was full of muscle, and her wings were made to lift a heavier form. It felt incredible. As the former pegasus admired herself in the mirror, she noticed another feeling. One that was all too familiar, and spread from her loins to a hot feeling in her chest.

Rainbow the griffon smiled. Why not? Might as well celebrate my new body, right? Rainbow felt so good, she was sure she wanted to keep this new form forever. For now, though, she mainly felt the need to give her moistening vagina the attention it needed.

Dash hopped onto her bed and laid on her back. Looking at her wicked sharp talons, she briefly worried that it would be dangerous to do this. But as she tentatively introduced the eagle’s limb to her aching opening, all her worries melted away. It felt incredible. Beyond WORDS amazing. Before she knew it, the cyan griffon was shoving her claws into her slit as far as they would go, massaging the clit with her palm as he went. This was SO much better than a hoof. The individual claws could reach places a hoof never could, and tickled so much more. Dash took her other talon and shoved a couple claws from there in, too, and rubbed faster and harder as her pleasure grew. Her wings stretched to their full span, spilling off the bed as Dash panted and moaned.

Something else was happening, though. As she stretched her twitching lion’s legs out, they did something strange. Muscles bulged under the skin as her legs grew a few inches longer, and her tail swished back and forth as it thickened and lengthened as well. The griffon arched her back, and it also stretched out, pushing her rump down the bed and making it hard to reach her dripping hole. Not for long, though, as her arms went through the same process of thickening and lengthening, and her wings suddenly bugled and jutted out even farther, almost touching either wall with the tips.

Rainbow couldn’t register what was happening, but she knew it felt good. Heat had spread all throughout her body and was making her feel more aroused than ever before. Finally, her neck bulged and stretched, and her entire head grew as Rainbow climaxed, spurting juices all over the bed and making her body feel like it was on fire. It was incredible, though, and in the final seconds, the griffon underwent one last growth spurt, her entire body stretching outward as her wings hit the walls of the room and her back paws pushed against the foot of the bed. Her tail twitched a final time and then fell limp onto the floor as Rainbow Dash panted happily.

The former pegasus sat up, and was startled to notice that her bed seemed much smaller than it had just a little while ago. In fact, the whole room seemed to have less space than it had previously. Her mind finally started to catch up to the feelings she’d had during her… session, and what had happened. It didn’t seem possible.

I grew?! Thought the prismatic griffon. How is that possible? I can’t even see my head in the mirror any more!

Standing up, Dash looked at her surroundings, dumbfounded at the slight but very noticeable change in their relative size. Sure enough, by her guess, she was significantly bigger. She had gained a fair few inches with the original transformation, of course, but now she was taller than Big Mac. Maybe even as tall as Princess Celestia!

Rainbow considered this. That was by far the best time I’ve ever had. And this body feels amazing. So… POWERFUL. And now, I’m bigger than any other griffon! The thought pleased her immensely. She had a fleeting thought of being able to look Celestia in the eye and show off her sharp talons and strong, clawed lion’s legs. She’d tower over Twilight now, and Gilda too. Talk about a power trip.

But as the high from her masturbation started to wear off, a new feeling came to Rainbow, one that was just as primal. Hunger.

Dear Luna am I hungry! I could eat a whole damn haybale! Except… No longer was the cyan speedster interested in hay or flowers. She wanted MEAT. It was built in. She could just imagine her sharp beak tearing into a meaty steak. Even though she had never even seen one.

The griffon’s stomach rumbled and hunger pains tore at her. She had to eat now! But where could she find meat in Ponyville? Let alone enough to feed a gigantic griffon!

But then Dash remembered- there was a griffon-run tavern on the north side of town. They could only rarely get deliveries from their home country, so they had to get a lot of it at once! If she was lucky, there would be lots of meat in the freezer of the tavern. It was her best bet.

Impressed with her fast thinking, the huge griffon ran downstairs and squeezed through her now too-small front door.

***

Though the ravenous hunger kept most of her attention, Rainbow noted how amazing it felt to fly with her new body. Huge wingstrokes, a tail that she could feel swishing in the wind, and her keener eyes all made her feel even more powerful. She flew above the clouds instinctively, not wanting to be seen, but then a thought came- why not? What was the point of a new body that she couldn’t show off? It was kind of her thing. So, the enormous shape dove below the clouds and landed near the Broad Wing Tavern, standing tall and proud as ponies screamed at the sudden appearance of a griffon the size of their princess.

Dash felt her ego grow. They were so LITTLE now. So… tasty-looking. The former pegasus barely noticed anything wrong with the thought. She was the predator. A big one. Queen of griffons. But there was probably ready-to-eat meat inside the tavern, so she walked up to the door and shoved it open, almost knocking it off the frame with her new strength. It was closed this time of day, but the lock smashing barely made a difference. A startled griffon stared at her smirking from behind the bar.

Ignoring his shouts entirely, Rainbow strode towards where she knew the kitchens to be. Squeezing through the door, she spotted a door that could only be a walk-in fridge. Her hunger taking over, she shot towards it, knocking it open and darting inside. She could SMELL it. And sure enough, there were drawers all across one wall, all with carefully wrapped steaks and chops. Her mouth watered.

Rainbow’s hunger was screaming at her now. She didn’t care about cooking. She just needed it inside her. So she used her talons, the size of a pony’s head, to rend a row of shelves apart. She barely registered anything after that. The griffons must have just got a big order of meat, because there was enough to feed a family of four for more than a month. But Rainbow didn’t even think about it. She was a big creature, and her hunger was fierce.

As more and more food disappeared into the rainbow griffon’s beak, her belly distended more and more. Soon, she just lay on the floor, pulling it towards her as her stomach grew rounder and rounder. She wasn’t thinking at all any more, just eating.

Finally, it was all gone. Burping hugely, the griffon stood up, and finally started to come to her senses. Rainbow had eaten a LOT. She was as big as Celestia, but that was a ridiculous amount of food- her gut hung low and she felt sluggish. How did I eat this much?? It’s not possible! I.. I feel…

In fact, Rainbow felt incredible. Being full was amazing. It was almost like heat was spreading through her- Uh oh.

Her tail was first this time. It burst out of her by at least a foot, and the warmth spread to her shoulders. It was amazing. But with what little rational thought she had, Dash realised she had to get out, fast. She started toward the door, and her right foreleg bulged and stretched. The cyan griffon moaned in pleasure but kept moving. She shoved her way through the door as her shoulders widened, and her neck got longer. She was running out of time!

Dash moved faster, grunting with every step as parts of her body grew larger. She was at the bar now, but too big to fit through the door to freedom- not that it mattered. As her head expanded and her wings stretched and cracked, she closed her eyes and shoulder-barged the thin wooden wall to the outdoors. Sure enough, the enormous griffon had the strength to push through, and the small crowd which had gathered outside to the shouts of the tavern’s owner saw a terrifying sight- a hugely stuffed griffon, with mismatched appendages, bigger than Celestia, and moaning in the joy of growth, stumbling through the wall and into the street.

Rainbow was free now. She could let go. REVEL in her power. And as the griffon sprawled herself out on the ground, rubbing her enormous belly, she moaned louder and louder as the meat inside of her was used to fuel her growth. Her talons grew even larger, the claws glinting in the sun, and her back bulged hugely, jutting out her entire body. Her tail got even longer, writhing as the girth increased, and her beak snapped as it too grew to match. The griffon massaged her huge belly even more as her back legs bulged with muscle and exploded in length. She stretched them out as far as she could, screaming in delight, as she spread her growing toes and watched the deadly claws unsheath. Her wings stretched as they too were fully extended and her shoulder muscles bulged with power. Finally, the rest of the bulge in the stomach disappeared as the prismatic griffon laughed with ecstasy, enjoying a final growth spurt before settling down and panting with pleasure.

What remained of the crowd was dumbfounded. Many had fled at the sight of Rainbow Dash, but those who were too shocked to move simply stared as the griffon stood and took in her new size. She could easily look into the top window of the tavern now, more than twice the height that she had been before gorging herself. Celestia would have to crane her neck to see the smirking face. If Dash wanted to, she could pick up any one of the ponies in front of her in a single talon. In fact…

Faster than anypony could react, Rainbow darted forward and picked up a pony at random from the crowd in front of her. Octavia screamed as she was lifted into the air by the enormous talon and brought face to face with the former pegasus. Rainbow laughed at how helpless everypony else was now that she had surpassed “oversized” and become a giant. These tiny creatures were nothing but prey to the new Griffon Queen!

As the thought entered her head, Dash realised just how appropriate it was now. The potion had changed her body and her mind, and now these ponies were just… meat. And I’m starting to get hungry again… let’s see how you taste! And with a giggle, the gigantic griffon opened her beak as wide as it would go and shoved Octavia inside. The other ponies scattered in a shouting panic, but Dash knew it was pointless. She was no slower than before.

As Octavia panicked inside the huge beak, Rainbow realised that she probably didn’t even need to chew. Taking another few seconds to savour the helplessness of the pony on her tongue, she tilted back her head and began to swallow the huge mouthful that Octavia presented. It seemed her new body was plenty up to the challenge, though, as the squirming form was pulled deeper and deeper into the griffon’s throat. Finally Dash felt the pony settle in her stomach, still clearly alive by the kicks that she felt. It was filling, but not enough. And there were so many more ponies in the town…

The griffon grinned and began to walk in the direction of Town Square. It was time to catch some prey. And maybe the potion will make me even bigger! she thought with glee.

Author's Note

So that's the first chapter. I hope you enjoyed!

Also, death is not a feature in this. These fetishes are about domination, but you will not find any suffering (except for, like, feelings of disgust) in this story, I promise. That's why there's no gore tag.

Chapter 2

As it turned out, ponies were even easier to catch than she thought. The giant cyan griffon caught more ponies off the street, savouring their helplessness and eating them with a single swallow. She could feel the squirming of the ponies in her stomach as they piled up and began to distend her again, it seemed that they weren’t suffocating or anything by the way they still struggled. After eating five or six, she could barely move. She wasn’t as full as before, but the writhing inside of her and the feeling of pure domination was making her horny again.

Getting an idea, Dash grabbed a nearby earth pony who was trying to hide behind a flower stall. It was Roseluck. Flopping onto her side, the giant rubbed her still-squirming belly with one talon as she brought the screaming pony to her face.

“Listen,” said the giant. “I’m getting horny and I want you to help me out with that.” She grinned, and put the whimpering form on the ground near her moist opening. “You have no choice in this. If you try to run, I’ll crush you. But go work on my clit and you might live,” Rainbow told her.

Roseluck knew she was stuck. It was better to do this and have a chance of living than it was to be ripped apart by giant claws. She approached the wet slit, grimacing at the clit that was as big as her hoof. Taking a deep breath, she began to work, using both hooves to tease the quivering area and give the enormous griffon as much pleasure as she could.

Dash was in heaven. Massaging her belly full of ponies, she laughed as her burning vagina began to leak juices onto the ground. “Rub your body on it!” she shouted to the helpless Roseluck, grinning as the flower vendor complied by standing on her folds and shoving her body against the opening, screaming in disgust at the fluids covering her. Rainbow threw back her head and moaned as the familiar heat began to spread outward. It was happening again.

Her talons were the first to get bigger, and she gave her belly one last jiggle before grabbing Roseluck and rubbing her more violently against her aching opening. It was pure bliss. The pony screamed as Rainbow rubbed harder and harder, Roseluck’s body almost entering the folds as she worked.

“Hnnnng.. if only it were a little.. bigger…” the giant griffon whipered. No sooner had she uttered it than the heat surged through her and her hips widened, muscles bulging across her back as she grew in the lower body. The opening was even more massive compared to Roseluck, and Rainbow could see that the pony could pleasure her even more now…

As the heat spread into her lion’s legs, Dash took a better grip on Roseluck and shoved the screaming pony into her vagina legs-first. She went up almost to the shoulders, and Dash’s eyes rolled up into her head at the feeling. Using both talons now, the giant pushed her farther in, moaning louder and louder as Roselucks’ head passed fully into the gushing slit. Just then the growth spurt in her back legs finally began, and she rubbed them together, squeezing the pony inside of her as her paws grew larger than a pony and her claws extended, the thighs bulging with muscle as her ecstasy grew. Inside the gigantic vagina, the pony panicked and squirmed. She wasn’t suffocating, but it was dark and hot and she was being squeezed by the enormous griffon’s lustful clenches. She kicked and fought, but there was no escape.

Rainbow Dash was still growing, and not as quickly as before. She just felt more and more horny the more she increased in size, which barely seemed possible. As her wings bulged and stretched yet again, and her head grew to match, her tail getting even longer and thicker, she moaned in pure frustration. She needed MORE. More size, more power, more ponies INSIDE of her. As her hips widened yet again, giving Roseluck more room, Dash got a wicked idea. Her tail felt pretty agile…

There were still ponies nearby, against all reason, and the griffon’s tail darted out and twisted around a stallion, lifting him into the air. Rainbow laughed as she waved him around, marvelling at the dexterity of her new appendage, and then unceremoniously used it to stuff him into her burning slit after Roseluck. Her eyes rolled up into her head as she shoved the ponies in as far as she could. Noticing that the squirming from her belly didn’t feel as full as before, she looked around to see who else was nearby to eat- but there were no more ponies within reach. They had all run away, but the town was still full of ponies, ones who wouldn’t know what all the commotion was. Time to go hunting.

The giant stood, still growing slowly in parts, and kneaded the ground as she used her tail to pleasure herself with the stallion still in her grasp. In and out, in and out… it was heaven. But she needed MORE. She wanted to be full. Full of meaty, squirming ponies…

Drooling, and still moaning with pleasure and desire, Dash walked towards the town center, her steps shaking the ground slightly. There! More prey! Running toward Sweet Apple Acres! As if that would save them. Licking her beak with anticipation, the giant set off briskly after the screaming townsponies. They were running into the barn! Perfect. Spreading her gargantuan wings, Rainbow shot forward, and with just a few flaps was at the barn, which she just about matched in height, and WAY outmatched in strength. And she needed to be fulfilled NOW. Her belly needed filling, and she was still getting bigger.

The cyan griffon rent off the top of the barn with her talons, and sure enough, inside were more than a dozen cowering ponies, caught frozen like rabbits in her hungry, lustful gaze. Tearing the wall away, and laughing with power, Dash laid back down on her back and grabbed two ponies who had tried to dart away.

“Don’t run!” shouted the Griffon Queen. “Or I’ll chew before I swallow! They’re still alive in there, see?” she said, pointing at her squirming belly. Not waiting any longer, Rainbow shoved a pony into her beak, sucking on it before swallowing it whole once again. Then the other went down. Then another, and another. Screaming ponies slipped down her throat one after another, and her stomach grew fuller and fuller, the heat from her ecstasy spreading again through her body.

She felt her legs bulge hugely again. It was happening faster! “Yes,” screamed the titanic griffon, her belly bulging and squirming. The pleasure was almost too much. “YES. BIGGER. MORE! YES!!” Rainbow could easily fit another into her dripping hole now, and why not? She grabbed a pony and shoved it inside as the arm and talon holding it underwent another growth spurt. Her tail exploded in size again, too, and the griffon let out an earthshaking moan as it writhed inside her slit. Madly rubbing her belly, feeling the struggling, helpless ponies inside, and using her tail to fuck herself with more squirming ponies inside her vagina… It was pure bliss. She was unstoppable. Enormous. and GROWING….

Her shoulders bulged and stretched, her beak got bigger and bigger, followed by a huge spurt in the rest of her head; her wings were fully outstretched and also pulsing with growth, and finally, Rainbow’s favourite part- her lion’s legs rippled with new muscle, bulging forward, her toes stretching out and unsheathing the deadly claws, which extended and shot out with growth one by one. Her tail once again got longer and thicker just seconds before her hips and vagina exploded in size, giving her a moment of painful bliss. Still tailfucking herself, and rubbing her belly with her talons, Rainbow screamed as the heat reached a new peak, her entire body surging in size and crushing what remained of the barn. Her juices shot out past her tail, forming a pool in the ground beneath her, and she panted as the insane delight began to subside. It would be back soon, she knew, but for now she could revel in the pleasure of her size and feel the live ponies still trapped in her stomach and vagina. She pulled her tail out of the latter slowly, ticking her clit with the tuft, and giggled, rolling over and standing up. Now she was truly titanic- She could crush one of the princesses with a single paw, or pin a pony to the ground with a single talon. The three ponies in her nethers continued to struggle, but they couldn’t escape any more than the ones in her gut could.

Then Rainbow had an idea. She was clearly the most powerful thing on the planet, now. Not even the princesses could challenge her. Could they?

She spread her wings, grinning, and looked in the direction of Canterlot. Only one way to find out.

Chapter 3

She was about to take to the sky when Rainbow noticed something just on the edge of her vision. She jerked her head back, thinking something was hovering over her, but the thing moved with her. In fact, she felt like there was something there, sticking out of the middle of her forehead. She reached up with a talon, confused, and felt it. She gasped. It was unmistakable.

Dash had grown a unicorn’s horn.But that was impossible! Griffon’s didn’t have horns. And it certainly hadn’t been there before. It must have appeared during that last big grow! But how?
I guess I ate a lot of unicorns, she thought. Maybe I absorbed their magic or something?
Whatever the reason, it was definitely there. Hardly daring to believe it, Dash concentrated on the wooden debris that remained of the barn. Sure enough, it was encased in a gentle pink glow, and at the griffon’s mental command, it rose into the air before her.

She laughed. Now no pony will be able to escape! She concentrated again, this time directing her attention at one of the nearby apple trees. Barely trying, she ripped it from the ground. Now this was power! She expanded her reach, and found that she could rip a whole bunch of trees from the ground at once, flinging them over the orchards with her new magic.

As good as it felt, her belly was starting to feel empty again, even with all the struggling ponies inside. Canterlot awaited.

***

Rainbow Dash landed in the middle of Canterlot’s main street, wings eclipsing the sun as ponies stared up at her, dumbfounded. The huge griffon barely fit in the street; her huge hips rubbed against the front of the buildings lining it. A pony stood gaping at a back paw which could easily crush a carriage flat.

Dash looked around, grinning. Her hunger could wait. For now, she wanted to revel in the power she had already. These buildings looked so small and flimsy now. She would show Canterlot what a giant like her could do!

Raising a talon, she ripped apart a nearby shopfront. Chunks of concrete went flying; ponies screamed and scattered, and the streets became chaos. The humongous griffon jumped up in the air with her wings, sending ponies flying to the ground from the downdraft, and landed heavily on top of a small cluster of buildings. She was still only twice the size of the Apple’s barn, but she felt no pain as she stamped on the buildings, crushing them into the ground in mere seconds. It was an amazing power trip- her size, her strength! Nothing could stop her! She could crush the city flat!

As Rainbow stomped over the city, stamping things flat with her paws and rending buildings apart with her talons, she enjoyed it more and more. This is pure power. I can destroy anything and anyone! she thought, loving the sight of ponies running away from the rampaging griffon as fast as they could. The power felt SO good… she was so strong… heat was starting to spread throughout her… she was growing again!

Sure enough, the more Rainbow Dash rampaged through the city, the bigger she was getting. Slowly but surely, and laughing all the while, the giant’s appendages pulsed in size one by one. Soon the griffon couldn’t fit in even the widest streets at all, and was forced to push through buildings everywhere she went, not that she minded. In fact, she did so with glee, stomping, smashing, GROWING as she flaunted her immense power. And her belly started to ache with need…

Dash looked at all the ponies running away as fast as they could. You can’t escape me, she thought with a grin. Her horn glowed, and a dozen of the nearest fleeing ponies were lifted, screaming, into the air. They were smaller than a single claw, now; she could grip five or more at once in a single talon. But it was easier to just use her magic, so Rainbow popped them into her mouth one by one, feeling them struggle as they went down her throat whole. She shivered with pleasure and moaned as she hit a small growth spurt, a back paw now filling half the street it was in. She was tall enough to go one-on-one with a full-grown dragon now. Maybe she’d even get big enough to eat one of those. The thought made her hungrier than ever. She needed to grow, she needed MORE, she needed to fill her belly!

The gigantic griffon walked through Canterlot, casually crushing buildings and swallowing ponies with her magic. Eventually, her gut got full enough to be uncomfortable, so Dash concentrated and picked out dozens of ponies from the panicked streets, lifting them all into the air. She flopped down, flattening more under her enormous body, and stretched out, showing off her slightly rounded belly as she moaned with the pleasure of her still-expanding form. Then she began to feast- pony after pony vanishing into her beak and down her gullet as she massaged her belly with both talons, shoving her tail once again into her dripping cunt. As her belly grew rounder, and Rainbow moaned louder and louder at the feeling of power from the tiny squirming forms inside her body, she began to feel that heat again- stronger than anything, filling her, making her scream in ecstasy-

Her shoulders bulged and widened, her wings extending to match, the muscles rippling as they expanded. Her head and neck grew to fit, and Dash arched her back as her tail grew inside her, getting bigger and thicker, squirming as it filled her up, as wide as one of her paws now- she pulled it out of her slit with a loud moan as she stared at it getting bigger and bigger. Was the rest of her going to grow to match it?! That was… she’d be as big as the castle!

Her mismatched form quivered as Dash grinned. Her tail was insanely huge, longer than the rest of her by far, and her wings were still growing with her head. Her legs and arms were tiny, now, but she knew it was coming next-

And no sooner had she thought it than Rainbow’s arms and talons bulged with heat, expanding rapidly along with her spine and body muscles. Her belly didn’t look nearly as full, now, but there was no time to think about it as she rubbed madly, screaming as the fire filled her legs, it was coming!

Her hips rippled and shook as they widened, the muscles in her legs expanding and pulsing as she trashed and twitched with the best feeling she’d had yet. It was too much, she was in heaven, the growth was better than any other sensation possible, it was too incredible for words!

“MORE!” screamed the griffon, stretching out again, twitching as the heat seemed to intensify even more. “MORE! MORE! BIGGER!”

And her wish was granted as her paws shivered and exploded in size, her toes spreading and the claws unsheathing as they too grew larger. Then suddenly she was subject to even more growth from her legs as they began to match the proportions of her tail, and the growth was happening from the bottom up, bulging in her paws, then hips, then back, and then her shoulders, neck, beak, and finally her wings; they all grew as Rainbow Dash thrashed on the ground, shoving her writhing tail back into herself along with a couple of her claws, screaming as her tail somehow grew AGAIN, and her body following, all of it flooding with the heat of power at once as she orgasmed, spraying juices between her tail and soaking her talons, causing a small flood in the ravaged streets as the griffon finally stopped growing.

Dash lay panting in the middle of the ruined buildings, flexing her back paws and running her talons over her thighs as she pulled her tail back out of herself again. Now she was truly gargantuan. She rolled over, barely noticing the buildings she crushed, and compared her talon to a nearby carriage. Ha! she thought. I could crush it with the tip of a claw. And she could. Grinning, the Griffon Queen stood up, and looked to the castle. She was definitely as big as it was now.

But there was something else. Rainbow squinted, and saw what she was expecting to have seen much earlier. The princesses of Equestria, all four, were flying towards her from the castle. The griffon grinned. Now to show exactly how powerful she was. The puny alicorns couldn’t stop her! They’d be INSIDE her.
,
It happened fast- the princesses stopped in the air before the titanic griffon, and Twilight began to shout something- but Dash wasn’t interested. Before they could react, she lunged forward and snapped her beak shut around three of them. Cadence, Luna and Twilight were swallowed immediately. Celestia was lucky enough to escape, and flew off… for now.

Dash began to feel the energy inside her build. Three alicorns were no small matter, even as tiny as they had been compared to her. The magical energy was building up, and Dash’s body was absorbing it-

The heat rushed to her extremities once more-

Her claws grew, wicked and sharp, followed by her lion’s paws, and then her powerful hind legs as Dash moaned. Even bigger, even bigger… outgrowing the castle, outgrowing the mountain… Growing from the back forward, she felt the changes continue: her hips widening as she dripped marejuice onto the tiny buildings below, her tail thrashing as it shot outward, now her back arching as the muscle bulges, her wings stretching to impossible lengths as she spreads them out, eclipsing everything. She moaned again as her neck grew bigger and longer, her head exploding outward, too, then her powerful shoulders and arms and talons finally growing to match. She flexed them, feeling everything underneath being crushed, nothing to stop her-

Then, she saw something odd- the princess who has escaped her was no longer so tiny. Suspended in the air, Celestia was growing too. Dash laughed as the puny pony princess struggled to power her spell. Dash had more power than Celestia ever would, and decided to show it.

Grabbing the princess from the air- she was a lot bigger; fitting into her talon nicely- she flopped down on the ruined city and slowly, joyfully pushed the thrashing princess into her cunt, legs first. Celestia struggled, but even better, continued to grow. As the gigantic griffon moaned louder and louder, pushing the alicorn further and further in, she was filled up more and more. Finally, with a grunt, Dash pushed Celestia all the way into the slick opening, the folds enveloping her head as she approached the size of a newborn foal relative to the Griffon Queen.

Dash was in heaven. The pony was INSIDE her now, and still growing, filling her up! Her hungry womb sucked Celestia farther in, and Dash’s belly was distended in a different way, now- before it was full of wiggling prey; now it was full of one HUGE wiggling load. Dash could barely contain herself at the feeling of Celestia- now gigantic in her own right- squirming inside of her like a foal, completely helpless, but STILL GROWING.

And then it began- Dash’s incredible power began to work. Celestia’s growth slowed- the griffon giggled as she felt the alicorn’s energy being absorbed by her body. Dash came, fluids flooding the destroyed Canterlot once more as she screamed out in pure ecstasy. Then she began to grow once more.

Celestia seemed to realise what was happening, and thrashed in the inescapable womb as she fuelled Dash’s growth. Dash rubbed her captive lovingly, moaning as her growth reached new heights. before, a claw could crush a carriage. Now it could crush a house. As the princess was absorbed more and more, a claw could crush the city hall, and then even more… The castle was like a toy to the griffon, now; it was half her size. Then a third. Then even less…

Dash stood up as Celestia became tinier and tinier inside. It was a shame that she wouldn’t have the incredible feeling of unbirth again… unless she came across a particularly giant dragon. The thought made her grin as she eyed the castle again, still growing. It was nearly small enough…

The Griffon Queen reached down and ripped the castle from its mountain foundations in two talons, appraising it. Then she opened her beak impossibly wide and munched it down, enjoying the thought of consuming the largest building in the world. Truly, nothing could ever stop her now. Then she eyed the mountain itself as her growth slowed to a stop.

It was about the right size for her moist cunt. Why not have one last orgasm?

Author's Note

Finally finished this piece of shit. Sorry it took so long.

More to come, hopefully. I have a lot of half-started things. Stay tuned.