This is a spell that could turn humans into pigs. Its incantation is Alverix Orcus, Transfrogamorphus, Spotticus, Trotticus, Transferus Porcus. It can be reversed using a simple reversing spell.
- Mildred Hubble uses this spell to turn Ethel Hallow into a pig, though her intention was to turn her into a frog. ( A Pig in a Poke)