Rarity undoubtedly had the largest tub I had ever seen. If I hadn’t carefully measured the inside and outside of the bathroom with my own eyes, then I probably would have thought it was some sort of non-euclidean space- I mean, how else could it fit in there? I was absolutely certain all the princesses, myself included, could comfortably lay in this tub… relaxed, naked, wet… NOPE! Not imagining Celestia and my sister in that way!

Still it was hard not to have some dirty thoughts when Rarity sauntered past, swaying her shapely but well-toned hips in a way that left nothing to my imagination. She called me forward with her hooves in a “come-hither” motion as she lowered herself into the filled tub, groaning in pleasure as she settled in.

I slowly stepped into the massive tub, enjoying the warmth as it passed through my aching forehooves. As I meekly lowered myself into the water, I heard Rarity let out an unlady-like bark of laughter.

“Twilight, quit being so shy. But ten minutes ago I had you strapped to a table and at my mercy. Now please, come lay next to me and enjoy the warm water.”

I smiled sheepishly and scooted across, leaning into Rarity as we both sighed and simply melted into the tub. As the minutes ticked by and the warm, mineral-saturated water soaked into my fur, my remaining worries were carried away and I shut my eyes…

Only for them to snap open when I felt something pressing against the outer folds of my marehood.

I looked to Rarity but noticed she was completely relaxed beside me, eyes closed; her lips curled into a satisfied smile. It had to be water jets in the tub or something, right?

That theory didn’t hold up to further scrutiny though as I realized there were no bubbles or foam being stirred up in the calm water.

I turned back to Rarity to ask her about it when she suddenly grabbed me and pulled me into a deep kiss, pressing her warm tongue into my mouth and entangling it with mine. At the same moment whatever I had felt pressing into me before returned, but this time it didn’t let up, pushing past my folds and traveling deep inside me, causing me to moan into Rarity’s soft lips.

I opened my eyes while still trapped in the wonderful kiss and realized Rarity’s horn was glowing. The glow flashed and grew brighter, and whatever had entered me tripled in size; radiating magical power and heat deep inside me. I squirmed and writhed trying to break the kiss so I could cry out in pleasure, but Rarity held me tight and didn’t stop there. Not long after the first intruder I felt something pressing against my tailhole, slowly forcing its way inside me as I did my best not to shout into Rarity’s mouth.

Once both my holes had been filled by the spell, the white unicorn finally released me from the kiss. I could feel the energy heating my insides in a pleasing way, while what felt like small vibrations pulsed out from the spell, teasing my walls and sending satisfying shivers through me.

Rarity simply watched for a moment, a pleased smile on her face as I quietly squirmed and moaned next to her.

“So here’s how this will work, darling.” she started, “this spell was carefully designed to bring the target to the very peak of an intense orgasm. However, until I power it fully, you will not be able to find release, no matter how hard you try.”

I gave her a begging look, I needed her to increase the intensity, this small teasing wasn’t enough!

Seeming to understand my need, Rarity let a little more magic trickle into the spell increasing its potency slightly as I happily moaned. Only for her to cut it back to almost nothing!

Rarity let out a tsk. “As you might now understand, I wasn’t finished.” her smile was sly and predatory. “Each time you make a noise I deem unbecoming of a lady, I will reset the spell back to the lowest intensity. Every minute you cooperate, I will increase the intensity, at full power, the spell will be complete and you will have your desired release.”

Without warning she pushed power into the spell, increasing its potency so much that I screamed out from the almost painful stimulation that had overtaken me, I wanted to cum right there, but I couldn’t, the spell was lowered back to almost nothing and I simply whimpered.

Tartarus, this was going to be rough!

Rarity licked her lips. “Oh darling we are going to have so much fun together.”

It had been fifteen minutes, or was it twenty-five now? My internal clock, normally so reliable, had short-circuited along with the rest of my brain as every ounce of willpower and concentration were being spent on Rarity’s sisyphean task.

Sweat poured off my brow as I fixed the unicorn with another pleading look, only to have her return it with one of feigned disinterest. She’d floated over a fashion magazine and started slowly hoofing through it, occasionally turning her head and shushing me before returning to her reading.

Magic pulsed and swirled hitting me with heat and vibrations from both sides as my depths found no relief from the constant waxing and waning stimulation.

So many times now, I had let a loud moan escape from me, causing Rarity to set down her magazine before looking at me and simply saying, “Try again, darling.” and then the spell would start over- it made me want to cry out in anguish and dissatisfaction.

This was literal torture... I was dying! I was in heaven! I was somewhere the light of hope would never find me. And controlling my suffering was this alabaster unicorn with a glowing blue horn, smiling smugly as she read her fashion magazine.

The worst part of all? I absolutely loved it.

It was like the ultimate test of my mind as I fought to control every inch of myself, tightening and releasing muscles at just the right moment so the wrong move wouldn’t cause me to let out a verbal cry. In those minutes I had learned more about my body than I probably had in all the hours spent playing with those toys under my bed at home. Even so, I needed release, and no matter how hard I tried, no matter how bravely I climbed, I just couldn’t seem to reach that final step before I was tossed back down the mountain.

After what felt like an hour, Rarity let out a disappointed sigh, lowering the intensity of her spell until the light from her horn winked out. She got back to her hooves and slowly waded out of the tub.

I’d been had!

“Hey, that’s not fair, I was doing so good that time!” I said, my voice dripping with frustration.

Rarity giggled and offered me a hoof out of the tub before giving me a short peck on the cheek.

“Twilight, nopony ‘beats’ that spell because it doesn’t really work that way. You could have orgasmed any time you wanted, but by me telling you that’s how it worked, you let your own mind trap you.”

Rarity was openly laughing now, pulling me into a hug as I did my best to slug her shoulder.

“You-you monster! That’s, that’s… You know I have guards and a castle... Rarity, don’t make me add a dungeon!”

Rarity dried herself with a towel as she fixed me with a sultry glare. “And don’t threaten me with a good time, darling.”

And with that I found myself being toweled off and dragged along by light-blue magic as we moved to Rarity's plush-looking bed. The unicorn pushed me into the silky-soft sheets before climbing up behind me. Before I could even move I was forced down and felt the sensations from before as Rarity reignited her spell from earlier.

My cry of pleasure was cut off as the unicorn quickly wrapped a forehoof around my throat, pulling me into her as she leaned back into the sheets, causing me to fall against her barrel so that she was hugging me from behind. We both lay in that position for a few minutes, Rarity keeping me locked in a tight hold while I attempted to squirm into her as the vibrations pulsed through my nethers.

Eventually Rarity moved the hoof around my throat to under my chin, forcing my head up as she eagerly connected our muzzles, probing her long tongue deep into my mouth. I moaned into her as she ran her broad tongue across mine, dominating it completely like she had with everything else today.

But honestly? I didn’t care. Here in this moment with Rarity, I wasn’t a princess, a Canoness, or even a AAA-certified Equestrian Librarian- I was simply her plaything and it felt wonderful to just let go.

Probably thinking I was getting a bit too relaxed, Rarity upped the flow to her spell, causing a magnified burst of heat to run through. I whimpered into Rarity’s mouth just before she pulled out of the kiss, looking down at me with lidded. She slowly began to lower the intensity of her magic before cancelling it completely.

I wanted to cry out and complain but before I could the mare leaned forward, rubbing against my cheek and whispering into my ear, “Darling have you ever tried a unicorn circuit before?”

I shook my head. “No... but I remember Lyra and Moondancer once tried it back in school. They told me all about it so I know how it works, but-but I chickened out when they asked me to join them...”

I could feel Rarity's smile as she kept pressed against me. “I’ll be your first, then?”

I didn't get a chance to answer as Rarity used her deceptively strong hooves to spin me around so that I was now lying on my back. I whined at the lack of warm fur against me as I tried to reach out and pull the fashionista down into me.

But instead of warm chest fluff I suddenly found myself being consumed by Rarity’s plump rear as she sat on my face, causing me to let out a muffled cry.

I could hear Rarity trying not to snicker above me.

“Now, now, I know my ‘le cul’ can be quite the shocking experience, but if we want to make a complete circuit, we have to line up everything just so.” she let out a small laugh. “Do feel free to get acquainted with ‘Rearity’ while you’re down there though.”

Snorting in annoyance and still upset about her stopping her spell, I decided to get a little revenge. So I used my tongue and quickly pressed it into Rarity’s tight tail-hole.

Rarity squealed before letting out a long moan. “Oh, darling, I didn’t think I’d trained you to do that yet- you kinky mare!”

So of course she was into that!

I simply rolled my eyes and did my best to tongue her as she wiggled into position on top of me. I was actually enjoying this feeling of being completely engulfed by Rarity’s generous- hehe, generous rear… I would had thought something like this would have been gross but Rarity was so clean and smelled so wonderful -like almonds and vanilla from a slow burning candle- that I realized there was probably no such thing as dirty when it came to this unicorn, other than her filthy mind of course.

My gentle probing of Rarity’s oven-hot hole came to a sudden stop when I felt her own soft tongue give my marehood a rough lick, causing me to pull free and moan in delight.

After a few more wet licks, Rarity paused before saying, “Alright darling, if you know how this works, then please go ahead and pick an entrance. Remember, as they say, ‘top to trot, bottom if you don’t want to walk.’ so perhaps since this is your first time we should start with the tail-hole?”

Rarity pulled herself forward slightly, allowing me just enough space to tilt my head forward and gently press the tip of my horn against her back-door.

You only needed the barest of contact, but the deeper you went the more intense it would be, or so I had heard. The entire process worked just like passing an electrical current: Unicorns, due to their mana stores, naturally produce a controllable, electrical energy that flows upward through their horn, which itself is an alicornium-infused bone that is highly conductive. I believe it was the unicorn physicist Neighaday, that first proposed the idea that two unicorns could cond-

“OH CELESTIA!”

I screamed, as my entire body, from anus to horn-tip was suddenly struck by a rapid current of pleasure and heat. I began to convulse, my muscles contracted and released without any command from my brain, which was being overloaded with magical-induced ecstasy.

My clit winked erratically as my folds began to flow with lubrication; twitching and pulsating as the lightning ran through me. My anus above it quivered and gripped against Rarity’s horn as what felt like pure energy was pushed into my depths. My entire body was engulfed- fire and pleasure scorched me, exiting my horn and pouring into Rarity, completing our unicorn circuit.

Despite everything, my ears could still pick up Rarity above as she screamed through her own throes of an unending orgasm while an onslaught of energy connected our bodies. I could see the magic sparking off my horn as it pressed into her, causing her anus and pussy lips to quiver and twitch as the powerful spell passed between us. We both writhed against each other, every rub of our electrified fur sending out additional shocks of pleasure.

“OH! Stars above!” I cried out as my inner walls contracted from yet another orgasm; every second seemed to push me past the brink again and again. My eyelids twitched uncontrollably and my tongue hung loosely from my mouth as every muscle in my body was outside my own control; clenching and releasing in an endless dance of electrical stimulation.

On and on it burned. I could see my horn was now red-hot from the intensity of the spell pouring through it. I must have squirted several times as my every inch was subjected to an endless parade of sensations. Everything was burning heat, deafening noise, and painful pleasure- it was incredible!

After minutes, or possibly days, one of us removed our horn long enough that the circuit broke and the all-consuming magic running through us slowly faded. Rarity fell against me and I was engulfed in a warm, fluffy pillow of white fur.

As both of us came down from the incredible orgasms, we could do nothing but pant and moan. Occasionally one of my rear legs would twitch of its own accord and my clit continued to wink madly, thanks to my now hormone-soaked brain.

After a few more minutes broken only by the occasional cough or whimper, Rarity finally wheezed out, “And tha-that, Darling is how... you complete... a unicorn circuit.”

I felt her turn on top of me and could see her face as she gave me a sly wink. “Let me know if you want to try the other hole next…”

I wasn’t so sure, I mean it had felt amazing. But if that was the least intense of the two options... What would happen if we touched horns to our marehood? Would my clit explode?! Despite my reservations I was quite tempted to say yes if for no other reason than to find out.

Before I could answer, I found myself mewling as a completely unexpected sensation hit me. While waiting for my response Rarity had gently popped one of my teats into her mouth and was now suckling on it like a newborn foal. Even in my own private sessions I’d never tried anything with my sensitive teats. Rarity’s suckling felt weird, but in an oddly pleasant sort of way.

I let out an appreciative sigh and leaned my head back into the bed as I relaxed and enjoyed the feeling of having my teats licked and sucked by this crazy and wonderful unicorn. After several more minutes I had nearly fallen asleep, but drifted back awake when Rarity let one of my teats out of her mouth with an audible *pop* before clearing her throat.

I opened my eyes and could see that she’d turned back to face me again. Once she knew she had my attention the unicorn asked, “So... relaxed and ready for round two now?”

I nodded hesitantly.

Rarity gave me a reassuring smile before positioning herself against me and I let out a small moan as her still warm horn pressed up against my sensitive folds. She was in place first, letting me be the one to kick off the session this time.

Still, there was no way I could have truly been prepared for what happened next. I slowly titled my head forward, inching my horn toward Rarity's slick marehood. As my horn touched Rarity’s delicate folds there was a brief flash, but nothing else seemed to happen...

And then our world exploded.

Rarity and I joined in a single loud cry of pleasure as the spell practically merged our bodies. I felt a sudden weight on my head and I knew without looking that we were wearing our elements.

Purple and blue tendrils of energy started to swirl between us tickling my barrel as it touched against my fur. The energy condensed near my belly before flowing into me, filling my insides with a radiating warmth that reached my very core. My every sense became heightened and focused. I could feel Rarity’s rapid heartbeat above me, her heavy breathing and passionate moans floated into my ears like the notes of a beautiful melody. I tasted copper on my tongue no doubt from the numerous small cuts where I’d bit my lip. Every nerve in my body tingled and burned, the sensation growing more pleasurable and intense by the second.

The condensed ball of energy flowed outward from my core, my hooves tingled and twitched as it spread through me. Eventually my entire body was filled with this thrumming energy. My eyelids began twitching and my vision began to narrow. Worry and doubt leapt forth in my mind for a moment and I tried to pull my horn free from Rarity- but I found I couldn’t move!

I gasped as my inner walls began to tremble and pulse as the energy that had entered me began to near my clit. After a moment more, the wave hit my sensitive nub with all the gentleness of a raging hurricane.

My entire body locked up as the most powerful orgasm I had ever experienced ignited every muscle and nerve at once. I was exploding- every piece of me breaking away into oblivion. I opened my mouth and found myself unable to scream, the sensations were so overwhelmingly that my vocal cords seized and I simply sputtered. I could feel Rarity shaking with me, her own silent scream no doubt pouring from her lips.

My clit was struck again and again by fire, pushing me over the crest, breaking my body before building me back up and striking me again. The mattress beneath us had become completely soaked as we both squirted steaming marcum into the purple sheets. We had no control or shame, we were nothing but a ship breaking the waves as we climbed and crashed together on an ever-expanding ocean of pleasure.

It almost felt as if we really were floating… I blinked in sudden realization. We were nearly a meter above the bed now!

I could see magical winds racing around us, the sheer intensity buoying us against the pull of gravity. I gripped Rarity tighter, as if her white fur was a life preserve keeping me aloft. Even with the incredible pleasure coursing through me, I did my best to focus my mind and body on pulling my horn away from Rarity’s quivering folds.

I felt energy build in my horn, we were likely hitting the limits of sharing mana. If we didn’t break the circuit a powerful mana feedback could burst through us, causing untold damage to our horns and minds.

My forehead began to sweat as the effort of trying to focus took its toll, but my focus was interrupted when I noticed a figure in the room, it was fuzzy and indistinct, likely a hallucination from the overwhelming mana streaming through me, but I swore I could see large antlers atop a large face with glowing eyes; Whatever it was, it simply nodded and just as suddenly vanished.

The magic suspending us ceased and we both plummeted back to the bed.

My vocal cords cooperated this time and my scream rang out throughout the bedroom as we fell, the plush mattress absorbing our combined weight as we crashed into it. I kept screaming as the energy that had been building released all at once.

I came and squirted so forcefully that I worried briefly that I may have bruised Rarity’s face. At the same time Rarity’s nethers gushed onto my horn and muzzle, soaking me with her juices. I coughed and sputtered before finally giving in and drinking the sweet nectar down, relishing the taste as the smooth liquid heated my throat.

I laid there, soaked in warm fluid, muscles sore from the strain of everything, yet I still managed a content smile.

“Rarity…?” I croaked out, but I received no response from the alabaster mare above me. I gently tried shaking her with a hoof as I felt her chest rise and fall against my barrel, but she wouldn’t so much as stir.

After a few more failed attempts to rouse the unconscious mare, I simply sighed and resigned myself to laying under the admittedly comfortable body pressing into me thinking about everything that had happened so far as my tired mind slowly drifted away.

I can tell most assuredly that this power is connected to the elements. Twice now this has occurred. This is most intriguing...

I know it has Celestia upset. Do...do you think whatever is happening is… malicious?

I have lived many eons, Twilight. Rarely has such love and passion carried with it the machinations of evil. It is far more likely we simply do not understand what Harmony seeks to accomplish here…

Author's Note

Rub a unicorn's magical horn enough and you get magical unicorn mayonnaise!

Yeah I know I'm trying to fit a story in here with the Elements of Harmony. I have a full plot (hehe) figured out, but the question will be whether I have the time and motivation to finish it. Between the clear lack of interest from readers as well as work calling me back to office-drone status in the coming weeks, we'll see what happens.