One day in class Hermione asked the professor "Can you tell us more about the legends of Iris?"

The professor said "Well, there was this girl the most beautiful here, she had all the boys in school wrapped around her finger. She walked the halls and everyone would whisper and talk cause all the girls in school wants to be her but behind those emerald eyes shes in disguise. She has blood on her dress, everyone she dates disappears without a trace so be careful when she asks you to dance"