Scale of Dragon is a potion ingredient of unknown effect, a scale taken from a dragon. The phrase is featured in the song "Something Wicked This Way Comes." Dragon scales are also an ingredient in Baruffio's Brain Elixir, a controversial potion with supposedly the ability to enhance brain power and intelligence.
- Harry Potter and the Prisoner of Azkaban (film) (First mentioned)
- Harry Potter: Wizards Unite (First appearance)