"It was like watching a speeded-up film of a growing tree. A head was shooting upwards from the ground; limbs were sprouting; next moment, a man was standing where Scabbers had been, cringing and wringing his hands"
—Description of the spell[src]

This spell (incantation unknown) was an untransfiguration spell that returned an Animagus back into their human form.[1]


It manifested as a bright blue light and might need to be performed by more than one wizard. If performed on a non-animagus, the spell would have no effect and would not harm the animal.[1]


Animagus reversal spell GIF

Black forcing Pettigrew to return to his human form

This spell was used in the spring of 1994 by Sirius Black and Remus Lupin to reveal Ronald Weasley's pet rat Scabbers as Peter Pettigrew in the Shrieking Shack, exposing his true hidden identity to Ron, Harry Potter and Hermione Granger.[1]

Known practitioners

Behind the scenes

  • In the film adaptation, the spell produces no light, and was performed on Pettigrew while he was rushing through a hole in the wall.


Notes and references

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 Harry Potter and the Prisoner of Azkaban Chapter 19 (The Servant of Lord Voldemort)
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