The next day Rainbow Dash, Rarity, Applejack, Fluttershy, and Pinkie Pie all went off to do their various activities in and around the cabin. Sunset Shimmer and Twilight Sparkle viewed their locations through the dark crystal ball.

“So, who should we go after first?” Twilight asked.

Sunset touched the dark crystal ball and zoomed in on Rainbow. “Rainbow Dash looks perfect to start with. Besides, I’ve always wanted to have fun with her.”

“Agreed.” Twilight said with sultry smile. “But I want to make this conversion a little more...interesting.”

Sunset placed her hand on her hip and looked at Twilight. “How so?”

Twilight opened her hand. A small pillar of dark flame appeared on her palm, turning into a black spider. “Just watch.”

Rainbow Dash was in the gameroom, located in the basement. She was playing with a pinball machine. “Yes! New high score!”

Twilight and Sunset peered down from the top of the stairs. Twilight released the spider. It crawled down the stairs and crawled across the floor over to Rainbow.

Rainbow started up another game when she looked down and saw the spider. “Woah, that’s nasty!” She raised her foot to squish it, but then stopped.

“Eh, I’d better not. Knowing Fluttershy she’d hear you get squished from a mile away. And the last thing I want is for her to be crying her eyes out for the rest of this vacation.”

Rainbow ignored the spider went back to playing pinball. The spider crawled over and grabbed on to her exposed ankle. Rainbow jumped up in surprise.

“H-hey! Just because I didn’t kill you doesn’t make us friends!” The spider then crawled up Rainbow’s capris. Rainbow shook her leg, trying to get rid of it. “Get the hell off of me!”

The spider crawled its way up Rainbow’s leg until it reach her crotch. The Spider then exposed its fangs and bit Rainbow on her clit, injecting her with dark venom.

“Aaaah! OH! OOOH! Ooooo….” Rainbow collapsed on the floor. “My clit...it feels like a million volts are running through it!” She thought. The spider disappeared in flash of black flame. “My whole body...it feels so hot! My pussy feels like it’s on fire!” Rainbow breathed quickly. Her entire body quivered, as even the slightest breeze made her feel like she was having a massive orgasim.

Sunset and Twilight then both stood Rainbow. “You were right Twilight, that was fun to watch” Sunset said with a wicked smile.

Twilight snapped her fingers. In a flash she transformed into Midnight Sparkle. “If you liked that, then you’re going to love my next idea.”

Sunset snapped her fingers and turned into Demon Sunset. “And what might that be?”
“I was thinking some D.V.D.A.*” Midnight Sparkle said with a sinister grin.

“You’re right, I do love it!” Tentacles emerged from Demon Sunset. They stripped off Rainbow’s shirt and bra. Tentacles also emerged from Midnight Sparkle, taking off Rainbow’s shoes, socks, capris, and panties.

Two tentacles from Demon Sunset wrapped around Rainbow’s arms while two from Midnight Sparkle wrapped around her legs. Rainbow was laid out spread eagle style on the floor. A tentacle from Demon Sunset squeezed and opened up at the tip to suck on Rainbow’s right breast while one from Midnight Sparkle did the same to the left breast.

Rainbow let out a massive moan of pleasure. “Oh yes! Squeeze tighter!”

Two tentacles from Midnight Sparkle both tickled Rainbow’s clit. Rainbow shuddered, as an intense wave of pleasure surged through her body. The two tentacles then intertwined and entered Rainbow’s pussy.

Demon Sunset did the same, with her two tentacles thrusting right up into Rainbow’s ass. The four tentacles went deeper into Rainbow with every thrust.

Rainbow felt like her insides were being tickled, and she couldn’t get enough of it. It was pure euphoria. “Don’t stop! Keep fucking me harder!”

After being completely worn out, Rainbow climaxed. The tentacles from Demon Sunset and Midnight Sparkle gush hot fluid into Rainbow’s pussy and ass. All the the tentacles unwrapped themselves from Rainbow, who laid on the floor covered in sweat and breathing heavily with a big smile on her face.

The dark crystal ball then phased through the ceiling and hovered above Rainbow. The eye of The Void looked down at her.

A tentacle then reach down from the dark crystal ball, entering Rainbow’s mouth and moving down her throat. The tentacle began pumping dark venom into Rainbow, her throat bulging with each gulp. The tentacle retracted, and Rainbow was engulfed in a pillar of black flames. The flames diminished, revealing Dark Rainbow standing in the game room. Her hair was in a mohawk. The sides of her head were shaved, with the hair in front swept to the sides. Multi-colored lightning bolts were tattooed under her left eye. She wore spiked leather wristbands, and a leather jacket that was purple on the right side and blue on the left. Underneath was a tiger print top. She wore a black mesh skirt and purple shoes.

“Ahh yeah! I feel electric!” Dark Rainbow shouted.

“You now obey me. You will convert the others and obtain their magic.” Said The Void.

“Not a problem, master!” Dark Rainbow, Demon Sunset, and Midnight Sparkle all made an evil laugh.

Author's Note

*Double Vaginal Double Anal.