A horn of a Bicorn.
Bicorns possess two large horns. These horns are shed annually and are gathered when the Bicorn is not looking.[1] One powdered horn is a required ingredient for Polyjuice Potion.[2]
Professor Snape had one in his office in 1992.
Behind the scenes
- The use of the horn of a Bicorn in the Polyjuice Potion was chosen by J. K. Rowling to represent "the idea of duality".[3]
Appearances
- Harry Potter and the Philosopher's Stone (video game) (GBC version only)
- Harry Potter and the Chamber of Secrets (First appearance)
- Harry Potter and the Chamber of Secrets (video game)
- Harry Potter and the Half-Blood Prince (film) (Mentioned only)
- The Road to Hogwarts Sweepstakes
- Pottermore