Tryouts

Twilight screamed.
Moondancer screamed.
Trixie screamed the loudest.
So I guess she wins.

Moondancer quickly dispelled the enchantment on the book, freeing all three of them at once. They reappeared in Twilight's bedroom, restored to their original physical form. Twilight quickly patted herself down, finding that she was no longer pregnant. Indeed, she had never been in the first place.

"Normally I would never destroy a book, but-" Twilight grabbed the enchanted copy of the Pony Sutra in her magic, making it glow brightly.

"No, wait!" Moondancer cried, trying to grab at the book herself. "I worked so hard on that!" Twilight pulled it away from her. The brightness of her destruction spell dimmed slightly.

"If you ever use this on me like that again, you're going to have to have this book removed from you surgically!" She shoved the book at Moondancer.

"You can be the caster next time," Moondancer offered, meekly. "That is, if you want to."

"Trixie is thirsty," Trixie said.

"Go to your room, Trixie," Twilight said.

"Trixie wants a glass of water."

"Go to your room!" Twilight and Moondancer both said. Trixie quickly left and ran back up the hallway to her own room.

"I suppose I ought to retire to her room too now, as assigned," Moondancer said, turning to go. Before she reached it, Twilight slammed the door shut, and locked it with her magic.

"Oh, I don't think so!"

Moondancer didn't even have time to look before Twilight grabbed her with her magic and threw her onto the bed. Twilight stepped her hooves up onto the edge of the bed, pulling Moondancer across the covers toward her. Moon flailed in vain to grab at the duvet. She put up a magic shield between them. Moondancer gasped in fear as Twilight brushed it away with her hoof as though it were no more of an encumbrance to her advance than a cobweb. Moon's horn glowed again to try something, anything else, as she panicked.

"No." Twilight's horn flashed, making Moon's horn fizzle, now made useless temporarily. Moon watched as Twilight's horn glowed again. Her crotch glowed, and a stallionhood emerged. "Gender change magic." Twilight recited, grabbing Moondancer's legs with her hooves, spreading them.

Twilight lowered herself down, bringing her face to Moondancer's virgin flower, taking a deep whiff. She opened her mouth and ran her tongue up her slit. It was sweet, and a bit tart. It had a tang that was utterly unique. After that first time, something about the chemistry of it changes. One of the lingering mysteries of biology.

"Mmm. Virgin pussy," she cooed, spreading her lips with her hooves, looking at her hymen inside. "Nothing else tastes like it." She gave her several more licks, savoring the memory of it forever. "Pity the other gals will never know what it tasted like." Twilight grinned as she reared up, bringing her new flesh appendage to bear against Moondancer's crotch.

Moondancer looked down in fear at the cock sliding its length along her slit as Twilight ground against her. She had experienced losing her virginity countless times before within the realm of her book. She'd taken cock much larger. But somehow, knowing that this one was real terrified her in a whole new way. She thought she was ready. She thought she was prepared. For all of her experience as a dominatrix fuck-machine in the safety of her pages, she wasn't prepared for this.

Moondancer looked up at Twilight, towering over her. Even with her staggering magical superiority aside, Twilight was physically imposing. Already larger than her, as an Alicorn. Beneath her feminine form were the strong, rugged muscles of a mare that routinely combated villainous monsters. She didn't even need her magic to dominate the other mare. She brought the tip of her stallionhood to Moondancer's pristine innocence, giving just a bit of pressure to hold it in place on its now-slippery target.

"Twilight!" Moondancer begged. Twilight paused a moment longer. "Please," she whimpered, "be gentle?" Twilight's fierce expression softened as she leaned closer to Moondancer's face. She gave her a light kiss on the lips. She nuzzled her cheek with her own, and leaned to whisper into her trembling ear.

...

"No."

Twilight pushed her hips forward, taking Moondancer's innocence in one smooth thrust, impaling her on her length in one fell swoop as she bit her ear. Moondancer cried out in a pitch usually reserved for bat pony echolocation.

Twilight held herself there, waiting for Moondancer to exhaust herself. She pulled out partway as Moon gasped for another breath and then slammed it home again, making her cry out once more.

Twilight brought her hips back and thrusted again, and again, humping in a steady rhythm as her new balls swung freely behind her. She looked down at Moondancer below her. The pale unicorn's eyes were screwed shut. Her mane had pulled free of her hair tie, and was tussled all over the bed beneath her in a messy, tangled mess. Her face was flush and her hooves trembled close to her chest as her body rocked beneath Twilight's motions.

Twilight felt her own need growing. She hastened her movements, greedily seeking her own release. Moondancer had her fill of pleasure within the book. Much at her expense. Turnabout was only fair, Twilight decided, feeling her pussy gripping her new cock with a warm, velvety embrace. Moondancer let out short little moans under her.

"Uhn, ngh, hng!"

Twilight, for her part doing most of the physical work in the exchange, focused on her breathing. She felt her balls tighten, signalling the end of this ride was growing near. The brevity was an unfortunate reality for a male equine. It was as much a reason why she preferred mares in the first place. She wrapped her hooves around Moondancer, holding her close to her in a tight embrace. Each mare buried their face into the other's neck. Moondancer felt Twilight flare inside of her as she hilted her a final time.

"I love you."

Twilight throbbed and twitched inside Moondancer as she ejaculated. Moon could feel the warmth of her cum spurting inside. It wasn't the superlative quantities in extraordinary realm of her book. But it was real. And she could still feel it. Each mare hugged the other as Twilight trembled on top of her. Her legs spasmed as her orgasm subsided. Moondancer wrapped her own legs around her, unwilling to let her leave just yet. After a few moments, Twilight's cock glowed and shimmered, shrinking and eventually vanishing altogether.

"Nooo," Moondancer whined, feeling its fullness leave her. Twilight disentangled herself from Moondancer's hooves and stepped away, letting her recover.

"Don't worry," Twilight assured her. "I can always cast it again next time." Moondancer smiled, secure in the knowledge of a 'next time'. Twilight leaned in and gave her another hug and nibbled on her ear again. "You be a good girl, and I might even teach you how to cast it on yourself," she whispered. Moondancer looked over Twilight's shoulder at the bed, seeing the small, crimson stain on the blanket.

"Sorry about your-" Twilight looked at the bed.

"Oh, don't worry about it. It's-" Twilight was about to it was 'no big deal'. But it wasn't. "It's a special occasion," she said. "It was- special." They each shared a moment, looking at eachother. She gave her another kiss. Moondancer tried to hold her a bit longer, but Twilight gave her a firm push away. "But I would have appreciated knowing that you were so 'experienced' with your practice. Of all of you gals, you were the one I would have least suspected to have been such a-"

"Freak?"

"Well, I don't mean it in a bad way," Twilight said.

"Well, I'm full of surprises," Moon said, shuffling her hooves a bit. "I suppose I should go to my room with Trixie now." Twilight gave her a weak smile.

"It's only fair," she said, unlocking the bedroom door.

"I'm glad you were my first."

"I'm glad I was, too," Twilight said. Moondancer gave her one final kiss, and left.

Twilight turned and looked at the small stain on her bed. She took a pair of scissors from her desk drawer and cut out a square of the fabric around it and set it aside on her nightstand. She folded the rest of the blanket and put it in her linen closet, taking out a different one and putting it on the bed. She could have Rarity repair it later.

Moondancer opened the door to Starlight's room. Sunset was snuggled up with the other mare under the blankets. Both sleeping soundly in each other's hooves. Moondancer smiled and closed the door. She freshened herself up in the restroom and headed to her own room.

She opened the door a bit and peered inside. Trixie was still awake and in front of the mirror again.

"Hey, you're the Great and Powerful Trixie," Trixie said to her reflection, "I bet you can do this!" She turned and waved her butt at the mirror with her tail flagged as she watched herself. She saw Moondancer's reflection in the mirror. She stopped and immediately turned to face her. "Finally!" she huffed. "You! On the bed! Now!" she commanded.

Moondancer raised a dubious eyebrow at the showmare, but politely complied. She set her book on the nightstand and climbed into the bed.

"Tonight, your name is Twilight!" Trixie instructed. "You will answer to nothing else. In fact, you will not speak unless spoke to! And you will only ever refer to Trixie as the Great and Powerful. Now lay down!"

Moondancer slowly laid down, as she was told.

"Trixie will be on top, NOT bottom. Because Trixie never fucks up."

Moondancer suppressed her smile.

"After tonight, you will not even want Twilight. You are going to love Trixie. You're going to love her more than anything! Oh, the things Trixie has planned for you! Now... what position to start?"

"Oh, Great and Powerful Trixie," Moondancer feigned emphatically. "May I please make a suggestion?" Moondancer said, grinning as she leaning over to the side of the bed, flipping her enchanted Pony Sutra open to the Advanced section, emblazoned with bold, red lettering as a warning.

"Slut!" Trixie spat, "You will not speak unless spoken t-"

Both mares vanished into the book with a flash of Moondancer's horn.

The next morning

Sunlight streamed into Twilight's bedroom. She opened her eyes and yawned as she stretched her hooves. She had slept wonderfully last night. She rolled out of bed and headed down the hallway, opening Starlight's door. Starlight was snuggled under the covers by herself. Twilight could hear the sounds of Sunset cooking downstairs as she had promised.

"Starlight," Twilight said. "Starlight, it's time to get up. Breakfast."

"Nnngh! Figh mur mints!"

"Okay. Five more minutes."

Twilight closed the door. She would check on her again on the way back. She opened the door to Spike's room. It was vacant. But the book on the nightstand shimmered and glowed. Twilight didn't dare open it. She knocked her hoof on the cover.

"Breakfast!" she said at the book. In a flash, both mare reappeared. "Were you both in there all night!?" Moondancer casually shined her hoof on her own fur.

"Yes. I'd say she's had enough by now," Moondancer said, walking past Twilight out of the room. Twilight looked at Trixie.

Trixie's eyes were as wide as dinner plates. She had her hooves wrapped tightly around herself, trembling as she rocked back and forth on the mattress.

"T-t-t-trixie n-needs a hug."