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Theories of Transubstantial Transfiguration was a book that covered Transubstantial Transfiguration, a copy of which resides in the library of Hogwarts School of Witchcraft and Wizardry.

History

The librarian, Irma Pince, added unusual jinxes to the copy, so that when Albus Dumbledore absent-mindedly doodled on a copy, it began to beat him around the head.[1]

Appearances

Notes and references