Polyjuice Potion

Polyjuice Potion is a magical elixir from the Harry Potter series that allows a person to take on another individual's appearance for a limited time. To use it, one must add a sample of the person's hair or another body part to the potion. The potion requires a month to prepare and involves complex ingredients, making it quite challenging to brew. It highlights themes of identity and transformation, as users experience life from another's perspective, but can lead to unintended consequences if misused.