The
Mirror of Erised is a mystical mirror that Harry discovers in some of the back corridors of
Hogwarts School of Witchcraft and Wizardry, in Harry Potter and the Philosopher's Stone. To activate this mirror, you must read the inscription
erised stra ehru oyt ube cafru oyt on wohsi. This is actually
I show not your face but your heart's desire, written backwards, with irregular spacing between the words.