At least some content in this article is derived from information featured in Harry Potter: Hogwarts Mystery. Spoilers will be present within the article.
- Harry Potter: Hogwarts Mystery (First mentioned)
Notes and references
- Harry Potter: Hogwarts Mystery, Year 5, Chapter 5 (Penny, Portraits, Peace, and Pressure) - Transfiguration Lesson "Feather Duster to Ferret"
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