- "It was definitely a curse that killed her - probably the Transmogrifian Torture. I've seen it used many times, so unlucky I wasn't there, I know the very counter-curse that would have saved her..."
- —Gilderoy Lockhart[src]
The Transmogrifian Torture (incantation unknown) was a curse which killed its victims. Professor Gilderoy Lockhart claimed that this was the spell to have killed Mrs. Norris before it was revealed that she had only been Petrified.
English "transmogrify", meaning "to change or alter greatly, often to grotesque effect", possibly implying that the curse changes the shape of the victim to cause pain.