Whilst everything was happening inside the motel room Spike was outside, hands on his knees try to will his erection to fade. To force his dick to soften and become flaccid but alas to no avail. The simple fact of the matter was he knew he could renter the room at any point and jerk off to the sight of Gilda and Rainbow, or even better he could stick his dick into Cadence’s willing pussy. A temptation that was becoming harder and harder to ignore.

“Come on Spike, keep it together you’ve got to get yourself under control.” He told himself, as much as Cadence said that she and Shining Armor had an open relationship. Spike believed Cadence's husband would still object to Cadence declaring herself Spike’s sex slave, being willing to put out for him on request and squealing about how much better dragon dick was compared to her husband's, then Shining Armor might still have objections.

The door opened and a very satisficed Cadence grinning at Spike. "Did you succeed?"

Cadence eyes sparkled with gleeful joy. "Oh absolutely successful Master."

That last word caused Spike's blood to freeze. "Cadence you did fix Gilda and Rainbow. You didn't make them sex slaves."

It was with great effort that he resisted asking the question 'did you?' though he suspected it wouldn't have made a difference. Cadence didn't say a word, instead simply nodded to the door and Spike assumed the worst entering inside.

His fears were soon confirmed, as sprawled at the bed was the unmistakable sight of Rainbow and Gilda. Both of them naked with Gilda tied on the bed, blindfolded and gagged. Rainbow meanwhile stood above Gilda, one hand traced over the Griffon's body. Whilst one hand beckoned Spike forward.

"So Spike I hear you’ve been holding out on us. Your bitchbreaker has already claimed how many sluts as your sex slaves, let's see if you can claim two more." Rainbow challenged, with an ever so cocky grin.

“Cadence I thought I told you to fix this.” Spike said, holding his hands up in a panic.

“I did Spike, but I found that underneath all that was a deep seated kink to be your sex slave Spike. I thought it was only fair to bring it back up.” Cadence explained, and Spike still doomed to believe her every word couldn’t question it.

“But Cadence I like Rarity.” Spike hissed to her.

“I’m pretty sure Rarity likes this Spike." Cadence reminded Spike, and he couldn't think of a response to that.

"But this is crazy, why do all these girls want to be my sex slave?" Spike gasped, clutching his head in disbelief.

"Maybe because you're a hot stud Spike. Maybe it's just that simple." Rainbow suggested, before spreading her legs out. "Perhaps we should find out."

Cadence's hand rubbed Spike's shoulders, fueling his arousal to a burning heat. Sharpening his senses with an erotic perspective. The horny mind of a teenager overriding his concern as he remembered now just how hot the two girls were. Gilda's wild nature, strong muscular body and large and perky large breasts combined to give her an Amazon look. The fact that she was tied up was just begging Spike to ravage her and make her his.

Rainbow was attractive in a similar way. Whilst her breasts weren't as huge as Gilda’s but with all the girls he’d fucked having huge tits to bury himself into, having a fairly flat chested girl made for a nice change. Apart from that however Rainbow was an amazon babe in her own right, her muscles stretched her skin as if it was too small for her body. Most especially with her firm, strong ass that drew Spike's eyes. It was tempting.

"Are you two sure about this?" Spike asked the two of them, unintentionally wiping away any resistance of their old personalities.

There was a muffled affirmative moan from Gilda whilst Rainbow shot him two thumbs up. "Well who am I to refuse?"

He began to tear off his clothing, much to the delight of all the women present. Taking the cue Cadence released the grip on his shoulder, took a seat and snaked her fingers into her cunt. Biting her lips in anticipation for the display. With Spike now naked the two who could now see had their eyes fixed on Spike's erect, large and powerful penis.

Eyes round in awe, Rainbow was stunned for words. "Wow Spike I didn't realise it was so-so... big."

Spike couldn't help but feel proud of himself for that, even if it was somewhat awkwardly so. Rainbow wasn't the type to give compliments lightly. "You'll feel it inside you soon enough, but I'm curious about Gilda here. Since when was she a sub?"

Rainbow smirked as she stood over Gilda, playing with the Griffon's large breasts. Roughly molesting them earning a squeal from the griffon. "She's more than that Spike."

She delivered her by point by slapping the griffon across her right tits and earning a muffled howl from the griffon but delivering a stinging arousal to Gilda's breast. "She's a complete masochist."

"Really?" Spike asked in disbelief, he never thought of himself as a sadist before. He glanced at Cadence who without a word smiled, nodded her head and using her magic summoned a riding crop for him. He grasped it in his hands, examined it and tried to get a feel for it. It felt alien, but then again looking at Gilda he could tell she was needy and desperate.

"Go on Master you know she wants it." Rainbow said, taking Gilda from the shoulders as if offering her to Spike.

"You two really want this don't you? You both really want to be my slaves." Spike growled, stretching the riding group in his fingers. He received two nods.

"Well then Gilda what are you going to give me?" Spike demanded, slapping the whip down on Gilda's tits one at a time. Causing muffled squeals as the griffon lashed against the restraints. "Rainbow ungag her."

Rainbow rushed over to do exactly that as Spike lined up his dick against Gilda's pussy. So that the tip was just barely touching the Griffon's cunt. Enough to tease but not commit.

"What are you waiting for Master? Fuck me already." Gilda screamed only to earn another whip on her leg.

"If you want to be my sex slave Gilda you're going to have to learn some respect." Spike growled accentuating his point by slapping down hard with his riding crop around her waist. The griffon screeched again in pleasure and pain.

"Sorry Master, please though use my worthless cunt for your pleasure. Let me serve you as I was born to, let my cunt please you." Gilda begged, still blindfolded sweat drenched her body as she shivered in pleasure and desperate arousal.

Spike was getting into this now, enjoying his new power over the women. Almost certainly catalysed by Cadence's own spell and magic from before. Perhaps for the first time he was picturing himself embracing Rarity's fantasy. Truly being the slave master stud she imagined him being.

"I have a lot of women begging to be my sex slave. Starlight, Cadence, and Twilight for instance. So Gilda if you are to join my harem what exactly are you going to offer me more than that?" He asked, slapping her another time.

"What?" She whimpered weakly, now becoming desperate as she strained against the restraints. "What do you want?"

"Surprise me." Spike demanded coolly, having no idea where this sudden sadistic streak had come from, nevertheless he still enjoyed watching Gilda try and think of something she could offer as she tried in vain to impale herself on Spike's dick.

"Cold." Rainbow noted, taking the time to prepare Spike by stroking said dick. Careful not to overplay her efforts and lead to him cumming early. "I approve."

Even through the blindfold Spike could tell that Gilda was desperate for an answer. "I'll be your hitwoman, any bastard you want to be taught a lesson I'll do it for you. That way none of pretty princess slaves would have to worry about their rep."

"Acceptable." Spike answered, he doubted he'd ever actually ask Gilda to do that but it was enough for the roleplay. He took the time and plunged into her cunt, feeling the walls of feathered griffon pussy tighten around his mast. His hands wrapped around Gilda's legs and he pulled himself into her pussy. Getting faster, deeper and delivering more force with each and every thrust.

Soon he felt Rainbow's own arms reached down his shoulders. "Make sure you leave some for me big boy."

"We'll see." Spike said before he unleashed a torrent of cum into Gilda's pussy causing the bird to screech in ecstasy. "It's your turn after all."

Cadence taking the cue, used her magic to unshackle Gilda and lift her off the bed, clearing the way for Rainbow. In spite of the fact that she was still masturbating and had gotten to the point that her face was now a scarlet red, and her tongue had rolled out of her mouth, dripping drool over her breasts she managed to do it effortlessly. Rainbow took the opportunity to leap onto the bed, lay on her back and spread her legs for her Master.

"All yours Master." She said with a cocky grin. "Let's see if this dick is really as good as it seems."

"Now Rainbow didn't you hear what Spike said to Gilda?" Cadence chided to the girl. "You think you deserve to be a slave to Spike's slave just cause you have a cunt? What else can you do for him and the harem?"

"HA! That all? Trust me Spike let me be your sex slave and I'll whip all your slaves into shape. I'm known as a great trainer myself, I'll keep every slave you have fit and fuckable and if there are any slaves who can't handle a cock I'll fix that." Rainbow boasted with a eager smile. "Now what are you waiting for?"

"Nothing." Spike growled before seizing Rainbow and shoving his dick her cunt. Stretching it ever so slightly as the size of the dragon's mast causing a large bulge around the athlete's ever so tight cunt. Rainbow couldn't help but let out a gasp of delight as he drove inside her.

Even as she tried to fuck herself on his dick she kept a cocky grin on her face, and suppressed any scream of ecstasy or delight.

“What is that it Master? You had me all worked up.” Rainbow teased, but it was a transparent bluff. She was clutching the sheets with an iron grip as she tried to hold back the squeals and screams that would betray her confidence.

"Not in the slightest." Spike promised before wrapping his tail around Rainbow's waist and hoisted her up until she sat on his dick and had to throw her arms around Spike's neck for support.

"Woah. Just what are you doing Spike?" Rainbow gasped, shock causing her words to slip.

"Trying these out." Spike growled, taking each of her small yet perky breasts into his hands and kneading them in each. All the while he bounced her cunt off the top of his cock while lifting her with his tail.

"You're after my breasts? But they're so small." She gasped, as she began to break a sweat as she broke into a feverish haze of lust.

"I have plenty of girls with massive tits. I like variety, plus yours a great in their own way." Spike replied and the blush on Rainbow's face wasn't completely from lust. Nevertheless she sought to reward her master by grinding her cunt around Spike's mast, eager to break the seal around his cock and have the cum burst into her needy cunt. A desire she communicated through throaty moans of delight.

"Oh Celestia more, more, more. Release your load into this awesome cunt, let me take your load and your cum. I'm your slave Master. I'm a slave to your awesome dragon dick." Rainbow Dash screamed as she splashed her cum over Spike's dick who responded by cumming in her. She was eager to clamp her snatch around said dick and squeeze it like a vice for every possible drop of delicious cum.

"Thanks Master."

Author's Note

Voting time again. I'll mention it here again, I intend to leave Applejack until after Pinkie Pie and the CMC until after Rarity so they won't be on the lists. Vote for Pinkie to get Applejack, and we'll stick to Ponyville until the Mane six all join.

Straw Poll: https://strawpoll.com/polls/05Zd1oQlby6