Hedgehog to pincushion

Hedgehog to pincushion is a Transforming spell covered in Hogwarts' Transfiguration classes between the first and the fourth year. By 1994, Harry Potter and his classmates, excluding Hermione Granger, still had not mastered the spell.

Appearances

 * Harry Potter and the Goblet of Fire
 * Harry Potter and the Order of the Phoenix (video game)