The tiny friend of mine 2

"Whew. It's done." Twilight said, rolling up the letter and giving it to Spike, who incinerated it with his fluorescent fire breath, which sent the letter to Princess Celestia.

"Ah'm going back to Sweet Apple Acres, ah got some work to do. See yah!" Applejack said and left through the door.

"I'm, umm....going back home too...If that's ok with you, Twilight." Fluttershy said, slowly and silently walking away.

"Urgh. Where should I put this?" Twilight wondered in her mind. She thought, thought and thought and finally came up with a temporary place; she placed it in the magic books for dummies-section.

"Like somepony in Equestria would be so novice with magic they'd need a book to learn? What a fool thing that would be." Twilight said and went outside.

*SPLASH*

The water balloon landed on Rarity's mane, soaking it through and through. She growled and heard a laugh from above. Rainbow Dash was sitting on a cloud, almost dying of laughter.

"Buahaha! You should see the look on your face, Rarity." Rainbow Dash laughed wildly.

"Hrmph. This isn't funny, Rainbow Dash. My mane is now all wet and unkempt; it was just fine a moment ago." Rarity whined.

"I think it's now....20% cooler." Dash kept laughing.

"Grr. I'll show you! I shall have revenge if it's going to take forever!" Rarity roared, only to get another water balloon on her face and Rainbow Dash laughing like mad.

"Hrumph!" Rarity shook herself to get dry and walked away. She walked towards the Twilight's library and knocked on the door.

"Twilight, my darling. Are you home?" Rarity shouted inside, only to receive no response.

"Hmm. I'll guess she won't be disappointed if I take a look at her magic books." She said and stepped in. There was many bookshelves for learning magic. She started with the book called "Tricks and Pranks".

"If I want  revenge, I'll need to perform a spell, which will make her beg for my forgiveness." Rarity giggled and stared the content.

After few books, she had cleared the whole section on pranks, but did not find a good one. She started to look for other books, but then she rammed to one of the bookshelves and the books collapsed on her. She quickly made a small shield, which protected her like an umbrella from raindrops. A one black book went through her shield and fell on her horn. Rarity screamed in pain, but after cooling down, she looked inside the book. Then, she finally found the spell that suited her. She took the book with her and ran out of the library.

"Hold on your hooves, Rainbow Dash, cause you're going to have one big problem." Rarity thought to herself.

Twilight went off to look for Rainbow Dash, but couldn't find her anywhere in Ponyville. She looked at the clouds to see that there was nothing.

"Twilight! Why do you want to see her?" Spike shouted and pulled at her hoof.

"I just need some of my friends to know this. Rainbow Dash just came to mind first, 'cause she is the element of loyalty. I think she could keep it a secret." Twilight said.

"Well, I know one place where she could be." Spike said.

"Tell me!" Twilight ordered him.

"Right this way!" Spike said and they walked out from the Ponyville towards Cloudsdale.

Rarity sneaked up to see Rainbow Dash sleeping on the same cloud. Rarity smirked and started casting the spell.

"Let's see who's going to laugh now." Rarity said with an evil tone in her voice. She started casting the spell and she felt a new force on her horn. Her horn started to create sparks and cracking sounds like Twilight's horn. Then a beam came out from it and hit Rainbow Dash. Rainbow Dash didn't felt anything and just kept sleeping. Rarity watched her and saw her size suddenly changing. She was shrinking like a balloon being drained of helium. Rarity used her magic to get Rainbow Dash off the cloud and looked at her. She was the same size as Applejack was during the poison joke incident. Rarity smirked and buried her in her violet mane. Then she decided to go back to her boutique.

While walking there, she encountered Twilight & Spike. Rarity panicked and hid the book behind her.

"Hello, Rarity. Have you seen Rainbow Dash nearby? Spike said that she should be somewhere around here." Twilight asked, looking at the clouds.

"Yes- I mean No! I haven't seen her, my darling. Nowhere!" Rarity hesitated with her words. Luckily for her Twilight believed her, even though she had a confused look on her face at first.

"Alright then. But if you see her, tell her to pop round." Twilight asked and they passed Rarity. She sighed and continued walking back to the boutique.

Spike led Twilight to the same place where she was sleeping, but she was gone (obviously). Twilight sighed.

"I don't believe it! She was here! Just minutes ago!" Spike complained.

"Spike, it's not your fault. Come on, let's go ask some of Cloudsdale's residents. I'm sure somepony will know where she is." Twilight said and so they set off.

Rainbow Dash woke up, stretching and yawning, she looked around. Something was wrong. Everything was bigger than she remembered and then there was a ball of yarn next to her. Rainbow Dash gasped as she understood; she had been shrunk.

"Well well well, looks like you're awake now." Rainbow Dash heard Rarity's voice behind her. She turned around, saw her and almost jumped out of her skin. From Dashie's perspective, Rarity was as tall as the castle at Canterlot.

"Rarity! What happened? Why am I so small?" Rainbow Dash shouted at her. She became frightened of the unicorn when she saw her smiling at her like she was a cat with a mouse cornered at the wall.

"R-Rarity. Why are y-you smiling like that?" Rainbow Dash started to sweat.

"Why don't you know? Cause it's finally time for ME to laugh!" Rarity said, giving a manic laugh.

"Rarity, stop that! This isn't funny!" She yelled at her.

"Like it was funny for me, when you threw your water balloons at me? I'm here for revenge!" She said and used her horn to levitate Rainbow Dash. She tried to struggle but her efforts were futile.

"How should I punish you for soaking my mane? Hmm...." Rarity started to think, while Rainbow Dash wave at her. She was scared. Really scared.

"Rarity! It was just a prank! Can't you just forgive me? I beg you!" Rainbow Dash said, crossing her hooves.

"NO! This kind of treatment shall not go unpunished!" Rarity yelled at her. Rainbow Dash was close to tearing up. How could such a little prank drive Rarity to do such a thing? After a painful wait, it seemed like Rarity finally had an idea.

"Say, Rainbow Dash. Do you like going as fast as you can?" Rarity asked with an incredibly calm voice. Rainbow Dash nodded. Then she felt something green wrap around her. It was the same thread ball, but now it was tied around her so tight, she couldn't fly or even stand.

"How about if I show you some tricks that I've practiced with a yo-yo." Rarity grinned. She let the thread fall and Rainbow Dash started to fall really fast. Then Rarity pulled it, sending Rainbow Dash up in the air. Rarity continued using this move and then tried something new with her, like making her spin wildly and going around in a circle. Rainbow Dash had felt this kind of speed, when she did a Sonic rainboom, but doing it a minute or more, her face started to turn green. She was ill.

Twilight and Spike asked  everypony where Rainbow Dash could be, but no answer came. Twilight started to think what could've happened and then remembered what Rarity said to her in the first place.

"Yes- I mean No! I haven't seen her, my darling. Nowhere!"

"She sure was kind of nervous. Why she would do that, unless-" Twilight gasped as she realised.

"Rarity has shrunk Rainbow Dash! Why she would do that?!" Twilight yelled in shock. Spike was confused, but the unicorn used her horn to levitate Spike on her back and she started running as fast as her hooves would go.

"Whoa whoa, Twilight! What's the hurry?" Spike asked.

"It's an emergency, Spike! Rarity must've taken the black book I hid, so she used that same spell on Rainbow Dash I used on Applejack! We need to get to her boutique as fast as possible!" Twilight said and blasted off.

After 5 minutes Rarity set Rainbow Dash on the floor, she was as green as a cucumber.

"Uuuh...Did a meteor hit me or something..." Rainbow Dash moaned, but Rarity interrupted her.

"So how was it, my darling? Had enough flying?" She asked with her normal voice. Rainbow Dash became angry and flew in front of her.

"Now I'm really furious, Rarity! You asked for it!" Rainbow Dash said, flying a few meters back and fly-kicked her on the head. It was just like the touch of the same water balloon that Rainbow Dash threw on Rarity. Rarity started laughing madly at Rainbow Dash, seeing how her strength was the same as her size. Rainbow Dash didn't give up and continued doing the same thing over and over. As she did it, her strength was sapped away. Then she couldn't take it anymore and landed on Rarity's one chair, starting to take deep breaths. Rarity stopped laughing and walked next to Rainbow Dash. She saw how tiny she really was and then got a devilish idea. Rainbow Dash looked at Rarity and only saw her flank above her. Her eyes widened.

"I do hope you'll struggle for me now, my darling, cause you're going to be under me for longer than I swung you with the thread." Rarity said and jumped on the chair.

THUMP!

Rainbow Dash opened her eyes only to see nothing. She couldn't feel any pain, but the pressure was so high she couldn't move. She tried to struggle her way out of there, but it didn't work. The only response was Rarity giggling.

But fate had come to save her, 'cause the boutique's door opened and inside came Twilight with Spike on her back. Rarity gasped, but quickly returned to her innocent smile.

"Why hello, Twilight. What brings you here?" Rarity asked.

"Don't lie to me! You've shrunk Rainbow Dash with that spell in the book you borrowed without asking! I don't know what problems you two have, but you will give her to me!" Twilight roared and Rarity stuttered, until she dropped her head, defeated. She raised from the chair and on the chair was a dizzy Rainbow Dash. Twilight used the counter-spell on her and she was back to her normal size in ten seconds flat. Rainbow Dash growled at Rarity, but Twilight stepped between the two.

"Girls! What just happened here? Why are you doing something like this?" She asked.

"It was all Rainbow Dash's fault! She threw her stupid water balloons at me and my mane got soaked! Even worse, she just laughed and didn't apologize!" Rarity complained.

"You are just so fussy! It didn't hurt you, but you shrunk me and started to use me as a yo-yo and even sat on me!" Rainbow Dash shouted.

"Girls! You are being ridiculous! Rarity, you shouldn't be so mad from that. It was just a water balloon and look what you have done. Rainbow Dash, why did you do that? What was in your mind, when you threw that water balloon at Rarity and you mocked her?" Twilight asked. Both of them went silent and stared each other.

"Girls, I think you need to apologize, both of you to each other." She suggested.

"I'm sorry I threw water balloons at you, Rarity." Rainbow Dash said, feeling guilty.

"I'm sorry too for shrinking you. Why would I have something like that in my mind, darling?" Rarity said. Then they both smiled at each other and did a friendly hug.

"Now, isn't it nice that you are now friends again and not enemies?" Twilight asked.

"You're right, Twilight." Rainbow Dash said. "But if you'll excuse me, I've got to practice some of my flying tricks so I can show the Wonderbolts how awesome I am." She said and flew away.

"Twilight, you're the hero of this event. I couldn't really control myself, my dear." Rarity told her. "But now, I've got to make dresses for my customers, so if you don't mind..." She said, pushing Twilight & Spike outside the door and closing it behind them.

And so Twilight and Spike walked back to the library.

"*Sigh* I wish I could use that spell, so I could make myself so tiny for Rarity." Spike dreamed.

"You're just jealous of Rainbow Dash, Spike. Let's go! We need to move this book to somewhere safer." Twilight said.