Master Druid Fish at Hogwarts

Introduction: Those who use druid magic to transform into bears are called bear virtues.Those who use druid spells to transform into owl beasts are called bird virtues.So those who use Druid magic to become humans should of course be called human virtues.This is the story of a little kitten who accidentally acquired the Druid spell from another world, was mistaken for an Animagus by wizards, and learned how to live like a human in Hogwarts.What evil intentions could a kitten have?