bobthewriter
I read this from another fanfic, a way to punish and execute Umbridge out if existence, the MC created a potion that slowly erased traces of Umbridge's existence in a week, in short the MC literally erased Umbridge out of existence, no one remembered her, no one even knew she existed, she became invisible and literally nothing. Btw, the Potion is called Existence Dilution Potion.