Snufflifors
Incantation	Snufflifors
Type	Transfiguration
Hand Movement	Point wand at target
Light	Purple
Effect	Turns books into mice

[Source]

Snufflifors is a spell used to transfigure books into mice; it is possible, however, that the spell can be used to turn things in general into mice.

Behind the scenes

• In the game, this spell must be bought in Fred and George Weasley's joke shop, and only Hermione Granger can use this spell.

Appearances

• Harry Potter and the Prisoner of Azkaban (video game)