The Slytherins, they weren't pleased at all. They had too had too much pranks, and it was time to get their revenge. Their former strategy, waiting for the three Gryffindor Pranksters to make their move, didn't work out so well.
"It's time we do something about this. I want my revenge." Nina said to the others surrounding her. After they finally got their furniture back on the ground, were they belonged. Jochems brain was working on full power.
"We need to figure out the fear of each of them, or a weakness, and get them on that. Humiliate them." He said, while he was already planning a strategy. They had to gather information about those three, but first they needed to write down what they already know. Jochem got a piece of paper and began to write.
"First, we know that Angela can make potions, but Kim can't. Instead, Kim is good at spells, but Angela is a catastrophe in that. Roos can do pretty much both, but average, while she can fly like the best." He summed up while writing everything down. He was clearly thinking out loud.
"Angela is afraid of spiders. I can know, we used to be friends." Lynn said. The other Slytherins looked at her for a couple of seconds before Jochem wrote it down.
"Ok, so Angela is afraid of spiders. " And so the planning began...

The next day the Gryffindors and Slytherins had potion class together. The Slytherins looked at each other with a smug grin on their face. Nina had a little spider inside a box in her bag. She passed it to Lynn, who was the closest to Angela and her ingredients and placed the box on her table. Angela was very curious, so she would look in the box. The Slytherins acted like nothing was the matter and kept at their potions. Nina was following the recipe this time, but she found that there weren't enough of everything in it, because she wanted to make double as much. So she doubled pretty much everything, making her cauldron practically melt away. Almost everybody's eyes were on Nina and the other Slytherins that were crowding around her table. That was untill a loud scream was heard.
"AAAAAH!' Angela yelled loudly, taking a step back from the spider. Everybody's eyes was on Angela now, which made Nina grin. She softly whispered a spell, and the spider grew. Every time Angela yelled the spider grew thanks to Nina's hex. In the end Roos needed to slap a hand on Angela's mouth to prevent her from screaming even more and making the spider as big as the table. The long-haired Gryffindor brunette stared at the spider with huge eyes.
"Promise me you won't scream or yell anymore." Roos said, waving a finger to the startled girl. Angela softly nodded and Roos moved away her hand.
"Make it go away." Angela said softly, still staring at the spider with eyes filled with horror. But the Slytherins where too amused to make the spider disappear. They should have done this way earlier. Oh, the satisfaction of that scared look on the girls face. After a little more of this fun they made the spider shrink again. It simply crawled away. By now, Angela was standing on a chair, as far as possible from the spider and glared at it. Even now it was small again, she still thought it was utterly disgusting and had to be destroyed or at least taken far, far, FAR, away from her before she would try to enchant it and make it disappear herself (if she would try that, she was positive she would make something explode). Finally, when she was sure the spider wasn't anywhere near she got off the chair and onto the ground. The girl was shaking heavily. She knew who did this and glared at the Slytherins, who looked away innocently. Well, they could look innocent what they wanted, but she still knew they did this. God.. How she hated spiders. She even hated it to use spider legs in her potions. But at least those weren't alive and crawling.

After class the Slytherins couldn't contain their laughter anymore. And as soon as they were out of the class and into the hallways, they were laughing loudly.
"Did you see the look on her face?" Lynn laughed.
"Her face? Did you hear that high pitched scream?" Jochem added.
"It was hilarious!" Yasmijn said. They all grinned widely thinking back of their little victory on the Gryffindor Prankster. It was giving them such a great feeling. Then Jochem turned to Nina.
"You know what's next." He said to the girl. She grinned even wider.
"Oh, I know what's next. And I am going to enjoy every little moment of it. You can count on that! I've waited for this for quite a while now." She said, while her eyes glistered with joy.

The next one on their list was Kim. This was going to be a tricky one, because Kim could detect magic. But they were Slytherins for crying out loud. They could do this! They were amazing, much better than those goody-two-shoe Gryffindors! Though, some of them weren't.. But they were still goody-two-shoes, because when it came to it, they were all about bravery and saving each other. Bravery their ass.
Lynn and Yasmijn were walking through the corridors. In the Gryffindors eyes they were the least dangerous, so they did this on purpose. On the other side of the corridor Roos and Kim were walking. The duo saw the two Slytherin girls and decided to walk over to them. Maybe they could amuse them, because Roos and Kim were quite bored at the moment. Angela had to clean the Potion classroom in the dungeon because of the mess she made with running away from the spider and disturbing class. So they were one girl short for fun.
"So, did you two though it was funny?" Kim started, while glaring at the two Slytherins.
"What was funny?" Yasmijn asked. "You mean Angela screaming like a little baby because of a spider?" She added with a grin. "Yes. That was funny."
Kim and Roos narrowed their eyes a bit. "No it wasn't funny. " They said.
"It was so funny my cheeks were falling off because of the laughing I did." Lynn said and grinned.
"Only your cheeks? I thought I would stop breathing because I laughed so hard." Yasmijn added. A huge bickering fight between the Gryffindor Duo and the Slytherin Duo began.
In the meanwhile Nina had sneaked around. While Yasmijn and Lynn were keeping Kim and Roos busy she had prepared a little spell. Which she now casted on Kim, who was too busy scolding against the other two to actually notice what was happening. That was, untill Roos noticed what was happening.
"Ehm Kim.." The youngest Prankster started.
"What is it?" Kim asked her younger sister and turned to her.
"Your hair... I think you would want to look in a mirror." Roos softly mumbled.
"What's wrong with my hair?" Kim asked.
"Well.. It's kind of, ehm, pink with purple dots." Kim's eyes grew and before they knew it the girl was running towards the nearest toilet to look into the mirror. Which was followed with a angry scream.
"I am going to kill you guys!" She yelled. But the Slytherins made their way out. Nina had a smug grin on her face while they ran away. The pretty pink color and matching purple dots would stay for quite a while, at least 3 days. Hah! That would teach Kim to screw with the Slytherins.

"Is it me, or do those Gryffindors make the most hilarious faces ever when something happens?" Nina said while she was having lunch with the other Slytherins. She grabbed an apple and took a bite, nonchalantly leaning on the table.
"No it's not you. We should actually captor these most precious moments and make leaflets to put all over the school." Lynn said.
"I wouldn't do that if I was you. They could track us down if we did that." Jochem answered, so that plan was quickly dismissed. They had still one prankster to go, and then they had to plan their big finale. Then their revenge would finally be complete.

It was time for Quidditch training and Roos was already among her team at the Quidditch field. She just landed on the ground to redo the laces of her boots. The five Slytherins were waiting underneath the tribune for the Gryffindor Quidditch player to be occupied by something else. So when she was redoing her laces they cast their spell on her broom. It maybe was a little mean, but this three girls really needed to be teached a lesson. And this was the best way they could think of.
Roos got her broom again and took off. But before she was a meter up her broom stopped working and became all gooey and flexible, causing her to fall off her broom. But once she was on the ground again with her broom in her hand, it was stiff again, not a trace of the spell visible on it.
"What the hell.." The young prankster mumbled, and tried again. This time she thought it would work when she finally reached the one meter, but them it happened again. Her broom got gooey and flexible, and for the second time she fell on the ground. But she wouldn't give up. Oh no, she didn't even had that word in her vocubalary. She kept trying, untill the captain of the team said that she better could hit the showers and take a break for today.
"You're clearly out of it." He said to the girl. She glared at him.
"I am feeling perfectly fine, but there is something wrong with my broom!" Roos said. "Every time I fly off with it, it turns all gooey and flexible."
The captain blinked a few times. "Let me try." He said and grabbed the broom. He could fly with ease, no problems. Then Roos tried again, but she fell on the ground.
"You're hitting the showers, and that's it. And don't blame the broomstick. There is nothing wrong with it." He said and send Roos away.

It was time for the finale. They sneaked a little crystal ball filled with one of Yasmijn's potions into the bag of a first year. Once the crystal ball would break, a smoke caused by the potion would come free. It would cause all the clothes to turn pink and itchy. It was just a small finale, but it was funny. The next day all the Gryffindors came into the grand hall, with bright pink uniforms on. They didn't looked please, none of them. Kim's pink hair with purple dots colored beautifully with her new uniform. This time the Slytherins had won, but they were sure a revenge was already being planned. But the faces of those Gryffindors and the pretty memories they've got from their little revenge adventure, surely were worth it all. Besides, they got away with it. They weren't discovered. There were no consequences at all.

Roos, Kim and Angela were simply having their breakfast, but they knew they got stared at. Or actually, Kim got stared at. You couldn't blame the others. Kim had bright pink hair and a bright pink uniform.
"UhmUhm." They heard a voice not too far away from them. Kim looked up and saw Lotte just a little bit next to her, standing at the end of the table.
"I just wanted to say, I told you so. I already told you guys you would get their revenge before the end of the week. I believe I won our debt?" She said with a grin and hold out her hand to receive her price.
"Thank you." She simply said as she got her galleons.
"Have a nice day, and I do hope the spell wears off soon enough." She said before walking to her own table.
The three friends looked at each other and their eyes said one thing: This was war.