Polyjuice Prank

At the start of their second year, the Slytherins decided to put Luna Lovegood under their protection because of her Seer capabilities. Two months later they learning that several Ravenclaws have been stealing Luna's things. They decided to teach Luna some basic defence spells, but also put a plan in motion to inflict vengeance against the Ravenclaw bullies, Sue Li, Lisa Turpin, and others.

The plan involved creating polyjuice potion. Hermione and Theo tricked Lockhart into signing a permission form to get *Most Potente Potions* From the Restricted Section. Then Draco tricked Snape into giving him the required potion ingredients.  For the next month Hermione and Theo brewed the potion in a warded, unused potions classroom in the dungeons. Once it was ready, Tracey and Hermione gather clothes the proper size and Hermione also got the hair they'd need for the potion.

They put their plan in motion the Wednesday before Christmas holidays began. Pansy, now polyjuiced to look like Luna, approached Sue Li and demanded the return of a stolen tie. When Sue refused, Pansy tackled the girl and ripped off Sue's own tie instead. Sue, Lisa, Orla Quirke, Yutaka Amano, and Becky Arncliffe all made chase, with Pansy leading them to a dead-end. The five witches moved to attack her, 5-1, only to be blinded when Pansy cast a bright light. On that cue, the other nine Slytherin appeared, they too also polyjuiced as Luna.

The group of ten attacked the Ravenclaws. They hit the girls with various spells (Bat-Bogey Hex, pimple jinx, *Furnuculus,* etc.) When finished, one of them cast another Dazzling Hex, and the other nine hid again on cue. The remaining "Luna" (Hermione) announced an extra revenge for them stealing her clothes, and magicked off the girls' clothes. The girls chased after their clothes as they floated jut out of reach, running naked through the halls and even into the Great Hall.

While this was going on, the *real* Luna was no where near by. She was studying with Ginny in the Gryffindor Common Room, and had been for hours. As such, when the bullies learned of her current whereabouts, they broke into the Gryffindor Common Room in an attempt to attack Luna.

Later that night, the five Ravenclaw bullies, Ginny, Luna, Hermione, and Draco were summoned to Dumbledore's office (along with Professors McGonagall, Snape, and Flitwick.) McGonagall (along with several witnesses and the Fat Lady) confirmed Luna's alibi, while Flitwick demanded justice for the five girls. Dumbledore claimed he believed both stories, and suspected Hermione and Draco of being behind the attack. He attempted legilimency on both of them, but was blocked by the Occlumency Shield. Unable to gain concrete evidence, Dumbledore had no choice but to let no one be punished. As they made to leave the office Hermione pointed out to Flitwick that this "apparition" could have been avoided if he did a better job of preventing bullying within his House. He took offense to that, but it's likely that he's made an effort since then.

1. ↑ Chapter 114: An Unusual Study Session https://www.fanfiction.net/s/13051824/114/New-Blood
2. ↑ Chapter 115: Deception and Deceit https://www.fanfiction.net/s/13051824/115/New-Blood
3. ↑ Chapter 130: The Polyjuice Prankhttps://www.fanfiction.net/s/13051824/130/New-Blood
4. ↑ Chapter 131: The Polyjuice Aftermath https://www.fanfiction.net/s/13051824/131/New-Blood