The Keen Duellist Badge was an award given by the Duelling Club to students of Hogwarts School of Witchcraft and Wizardry during the 1996–1997 school year, regardless of their house. To receive the badge, students had to participate in the Duelling Clubs of all four Hogwarts Houses. The badge was a Duelling Silver Badge.
- Harry Potter and the Half-Blood Prince (video game) (First appearance)
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