"Hey Padfoot!"

Sirius turned to find James running up behind him as he made his war towards the Gryffindor common room, he was eager to finally put his prank on the Slytherin's into action and tonight was the night, he had been planning this for a few weeks now since the Headmaster announced that there would be a prank war between the graduating eighth years. He had to admit that Dumbledore definitely had to be one of the best Headmasters of Hogwarts, it also helped that he seemed to be a big supporter of the antics of himself, James and Remus, occasionally getting help from the very timid and often quiet Peter Pettigrew.

"What's up Prongs?"

James shrugged, "Just wondering what you've been planning in secret for so long since this prank war was announced"

Sirius smirked and patted his friend on the shoulder, "All in due time James, all in due time. All I will say though is that the Slytherin's won't know what hit them"

James shook his head and laughed, "If it's anything like your other pranks then I'm sure they won't! We still have to get them back for beating us at the Quidditch match the other week"

"Don't worry, I'll make sure to get them back tonight" Sirius stated as they reached the Fat Lady's portrait

The Fat Lady eyed the two boys curiously, almost sensing what they were up to before asking "Password?"

"Wattlebird"

The portrait swung open to reveal the Gryffindor common room, James and Sirius entered together still chatting animatedly about the upcoming prank. Just as they were about to go up to the dormitory Remus appeared by their side. "Be careful, I spied Peter snooping around the dormitory before I came down, he must be looking for your prank Sirius. Must be trying to copy it"

Sirius grimaced, "Why can't that nuisance ever come up with an original idea on his own? He needs to stay out of my stuff too!"

With that Sirius bolted up the stairs and into their room, and just as Remus had said, Peter was currently looking all over the room, the poor boy wasn't even trying to hide it! Sirius coughed slightly to make his presence aware and almost laughed in response as Peter jumped almost a foot in the air before jumping onto his bed and hid under the blankets. "I'm sorry! I'm sorry!"

"Oh wise up Pettigrew" Sirius laughed, "It's only me"

Peter peeked his head up from under his blanket and sighed in relief as he saw that it was in fact Sirius who came into the room.

"What are you up to Wormtail? Looking for something?"

Peter gulped and shook his head nervously, "W-Why would I be looking for something? I haven't lost anything"

"Oh no reason" Sirius sighed, finding his nails interesting to look at as he toyed with Peter. "It just seemed like you were looking for something when I came in. You weren't by any chance looking for my prank were you?"

"N-No" Peter squeaked, he was now a shaking mess under his blankets

"Curious, very curious indeed" Sirius mused before smirking at his younger friend. "You're never going to find it Wormtail. It's hidden somewhere were no one will find it but me. So for once in your young life go steal someone else's idea or come up with your own. I've worked too long and hard on this prank just for someone else to steal the glory"

Peter gulped and nodded, "Okay. I-I'll do that. Sorry S-Sirius"

When Sirius didn't reply the younger boy took off like a rocket and ran back downstairs to the common room, thankfully leaving Sirius alone to finish off the rest of his plans. Sirius shut the door and put a locking spell on the door so he wouldn't be disturbed before going to his bed. He pulled the heavy blanket up from the end of the bed before getting onto his hands and knees to pull a sheet covered cage from underneath the bed. He pulled the cover up and grinned at the sight before him, "Hey little guys. You're going to do a great job for me tonight aren't you? They'll never know what's coming. Those slimy gits deserve it, especially Snivellus and Malfoy. Let the prank war begin"

After ensuring that his plan was still safe and in motion Sirius joined his friends for dinner, enjoying another hearty meal with good laughs. All too soon they left the Great Hall with their bellies full and aching from laughter, as they neared the common room Sirius pulled Remus aside and waited until the last of the first years trickled by before speaking to him. "Are we all set for tonight?"

Remus nodded, "They fell for it so easily" He chuckled, usually Remus found it hard to let go and pull a prank. More often than not he was worrying about his monthly problem and how to control it, he had to admit though having Sirius and James, sometimes Peter too, helped a lot. It got quite lonely in the shrieking some nights, he would never be able to repay Dumbledore for all the kindness he had shown him during his time at Hogwarts.

"And you left them everywhere in the common room?"

Remus nodded and grinned, "I was even able to slip some into Malfoy's underwear. Do you know that he leaves a spare pair of underwear on his bed? I overhead a few guys talking about it in the dormitory, he apparently changes them every evening after dinner"

Sirius simply stared at Remus for a moment before breaking out into gales of laughter, he was laughing that hard that tears begun to fall from his eyes. "That's hilarious! Ooh we have to tell James that after tonight! He'll be wanting to use it in his prank against him. Also you must have done a damn good job on that polyjuice potion and imitation of Jones to fool those Slytherin's. Mind you, they are quite dimwitted so they would really fall for anything wouldn't they?"

Remus laughed along with Sirius before nodding in agreement, "What time are you putting this prank into motion then?"

"Probably very soon, so I after I leave I need you to give it five or ten minutes before directing everyone down to the dungeons, I want to make sure that no one from our house misses this!

Remus laughed and shook his head at his friend. "I don't think anyone would want to miss this for the world"

"Of course they wouldn't! Plus it will probably stop someone from embarrassing themselves if they try to out prank me"

The two boys made their way back to the common room were everyone was still gathered and enjoying their free evening. After quickly reminding Remus of his part in the plan and speaking to James to make sure he could use his invisibility cloak Sirius dashed up the stairs, he cast a levitating charm on the hidden crate before draping the cloak over it and himself. As he made his way back downstairs he couldn't help but look around at everyone gathered in the room; most of them he would consider family. He wouldn't admit it to anyone but the thought of leaving this place and having to return to his dreadful home killed him. He was going to miss his friends, especially James and Remus, a lot. Hopefully they would be able to see each other a lot over the summer.

Shaking that thought from his mind Sirius made his way to the door where Remus was standing expectantly, he tapped him on the shoulder and couldn't help but laugh as he jumped in surprise. Remus pushed the portrait door open for him to allow him to climb out and once he was free he made his descent to the dungeons, it didn't take him too long to get there and once he made sure the coast was clear, he pulled the cloak off and also removed the cover from the crate. He stared down at the 5 or 6 Nifflers that were gathered together and grinned as his patted them softly.

"Being friends with Hagrid comes in very handy" Sirius sighed happily and opened the cage.

"Now you listen here guys" He petted them affectionately and almost cooed as they cuddled up beside him, brushing his leg and running to his pockets to try find something shiny. "You go in and show them Slytherin's what you've got okay? You may encounter some horrible things but remember the aim is to embarrass as many of them as you can, okay?"

Sirius didn't know if it was just the prank getting to him but he could swear that the Nifflers nodded their head in understanding at him. He moved to the side and watched as the Nifflers slid themselves under the common room entrance just in time as the Gryffindor's appeared from the corner.

"Greetings one and all!" Sirius bellowed, "Are we all ready to get some revenge on the Slytherin's?"

The Gryffindor's cheered in agreement, but not too loudly so as to give them away but quietly enough that Sirius could still hear them. They moved around the corner again to hide themselves and it was a good thing they did as no sooner had they moved the door to the common room swung open and a pile of Slytherin students fell outside, screaming and running in what seemed like terror.

Sirius, James and Remus broke out into fits of laughter as they spotted a flash of blonde hair, which obviously belonged to Lucius Malfoy who was waving madly at his trousers, trying to get something out of them. In his earlier adventure to the enemies territory Remus had managed to replace Lucius Malfoy's belt with a pure silver belt, ensuring that the Niffler would go straight for him. It got even better when in the haste to get the Niffler off of him, Lucius abandoned all reasoning and stripped to his underwear, making the rest of the Gryffindor erupt into laughter as they saw his dark green boxer shorts emblazoned with dragons on them, it also helped that somehow Remus also managed to attach a pocket watch to the back of his boxers so unknown Malfoy the Niffler continued to chase after him as he ran down the hallway.

"Magnificent Padfoot!" James roared with laughter as he clipped his friend on the back of the shoulders.

"There's more where that came from Prongs!" Sirius grinned, ideas forming and calculating in his mind.

The prank war had officially begun.