Harry Potter and the Prank War

Voldemort was defeated before he was ever a real threat, millions of magical lives were saved, and the Wizarding World lives in peace- mostly. Blood prejudice runs rampant, and when Harry Potter rejects Draco Malfoy's offer of friendship over the use of slurs and outdated, harmful ideas, he inadvertently sets off the biggest prank war that Hogwarts has seen since the Marauders.