Rainbow watched as Gleaming adjusted her velvet top unaware of what little mental capabilities slowly diminished to servitude and pleasure. The sluty unicorn moaned softly as her body slightly stiffened, and her hind legs twitched and her breasts grew at the thought of being filled with her "master's" big… thick… hard… juicy dick.

Glitter moaned softly as her entire body felt like it was on fire. It didn't take much for her to notice how horny she was becoming. Her breast grew as she sat back moaning.

Fluttershy gasped at the show as she went through her own changes. Sitting by his chair, She noticed she was able to smell things she hadn't before. Her nostrils flared as the scent of sex and lust. She felt a rumble in her stomach grow as pleasant thoughts danced through her head.

Sunburst moaned as the vizier he grabbed seemed to merge to his face as his limbs became harder to move. As he fell onto his side, a device fell from the vizier as his body seemed to "turn on".

Sunset looked herself over as she examined her nurse's outfit. Thoughts of babies and letting her tits get sucked danced through her head as her hips widened and her breasts grew.

Smolder started fixing dinner. She ideally rubbed her ear clip as thoughts of her mate giving her jems and bracelets. Her claw drifted down her chest at the thought of having him rut her in front of a crowd to show his domestic as her king and her as his… goddess? Her thoughts ground to a halt for a moment. Did she really want to be seen as a goddess? She returned to cooking as she let the thought danced through her mind.

Applejack moaned as she made her way to the back yard. Leaning against the wall, she panted heavily. Her tits felt as if they were getting heavier by the second. She desperately needed to get milked. Blinking, she looked over at a group of Timberwolves and considered letting them drink from her. She forced herself to look away, she wanted FrostBite to be the first to have her milk. Then again… maybe Bloom can get a milkur from home for her.

Bloom came over and smiled up at her. "Hey sis. You look like you can use some help."

"So… full… need FrostBite…" Applejack moaned, unaware that the horns had fused to her head.

"We can help. And don't worry. These guys won't waste any milk." Bloom replied. "They might take a little for themselves. But they'll be able to stash the rest in a container." She smirked and moved up next to Applejack licking her slowly merging breasts. "They can even add different flavors to the milk. And sensations as they suck out your milk."

Applejack bit her lips and moaned softly before crying out. "Please milk me!"

Bloom smiled and stepped back as the wolves went to work, each taking a tit leaving her to stand helplessly moaning and mooing in pleasure. As Bloom tended to her sister's soaking pussy.

Rarity made her way to the upstairs bathroom and froze at the sight of the tub full of what looked like pudding. In the center of the pool was what looked like a pink gem that drew her closer.

"Pinkie? Are you here?" She asked as she reached out with her magic for the gem. "Did you leave this for me?"

As she was about to grab the gem, a goo covered Pinkie poked her head out of the goo. "You can have it if you help me try something with my new body."

"And what would that be?" Rarity asked as she stepped back letting Pinkie climb out of the tub. Her eyes widened at the sight of her large dick as well as several tentacles.

Pinkie smiled sheepishly. "Would you mind?... I think I forgot a step. And I still need help to get control of my body… yet."

Rarity licked her lips and eyed the gem as her nose picked up the scent of sex as her mind fogged over. "Take me…"

Twilight sighed as she made her way down the street. She thought about what had been going on and what this meant for her and her friends. Looking around she found herself eyeing the ponies as she passed. Normally she didn't really pay much attention to the locals when she had things to do but today she didn't have a problem looking around as she made her way down the street. Looking back she noticed the stallion that arrived at the house with Rainbow was following her with a metal chain around his neck.

"Why did you put that on?" She asked before turning her attention back to the ponies they were passing.

"Mistress Dash said that I can join the herd if I submit to her and the master." He replied with a smile. "Besides, other than the shop. I don't really have much to do."

Twilight stopped and licked her lips as she saw a couple of ponies that in her eyes would be perfect to serve the herd. "Well then what do you say we show some others how great it is to be in the herd?"

Looking over he smiled at the sight of two mares that he recognized. One from a local club, and the other from a trip to Canterlot. "I would love to. But what about the snacks?"

"We are getting them. But no pony said we can't sample them first." She snickered as her eyes reddened as they slitted. "Let's have some fun."

FrostBite slipped into the lava pool with a sigh and looked up seeing Scootaloo resting on a ledge. The two looked at each other before smiling. "You think I should see about forming a night guard?"

"Up to you." FrostBite replied. "Just be careful and don't go near Canterlot." He replied.

Grinning, Scootaloo flew over and kissed his lips before flying off.

Author's Note

Edit: titled chapter
The herd thus far

FrostBite: alpha male
Rainbow Dash(Ruby): alpha female, pony/dragon highbred
Scootaloo: second pony mate, bat pony
Smolder: alpha female, "goddess" (was thinking of an Egyptian one. But don't know which one would be best)
Applejack: pet (possible worker), cow
Apple Bloom: worker, timberwolf/pony highbred
Pinkie Pie: SLUT, goo mare
Rarity: pet, Diamonddog/pony highbred
Sweetie Belle: slut, changeling queen
Fluttershy: pet (likely caretaker), (can't think of the name. But I thought of her transformation would be related to her stare)
Sunburst: SLUT, pony bot
Shining(Gleaming) Armor: slut (possible relief partner), living sex doll
Flash(Glitter) Sentry: worker/relief partner, horny maid
Sunset Shimmer: pet (definitely breeder lol), sluty nurse
Gallus: bitch(one small step up from slut)
Sandbar: slut
Ocellus: slut (hungry pet?)
Silverstream: pet
Twilight Sparkle: ???(maybe worker?)

Wonder what the others will become. Or if the transformations should take a different spin then I have set up thus far.