ĭuring the 1993–1994 school year at Hogwarts School of Witchcraft and Wizardry, Professor Remus Lupin taught this spell to his third-year Defence Against the Dark Arts class. In the 1985–1986 school year, when Rowan Khanna nearly entered it, they were attacked by the spell and knocked unconscious, and had to recover in the Hospital Wing afterwards. The door to the Vault of Ice, one of the Cursed Vaults at Hogwarts Castle, was enchanted with this spell. An individual frozen in a block of ice with this charm
