Brew a powerful Polyjuice potion. Take a drink and… transform! Join Harry Potter™, Ron Weasley™ and Hermione Granger™ as they create the magical potion in the Hogwarts™ bathroom – and experience some unexpected changes! There are other surprises too: a secret tunnel beneath the sink, an exclusive, golden, anniversary Harry Potter minifigure, plus 2 random wizard card tiles to collect. LEGO® Harry Potter™ Hogwarts™: Polyjuice Potion Mistake (76386) inspires magical adventures in the Hogwarts bathroom. Minifigure makeovers with Polyjuice potion Young witches and wizards join Harry Potter, Ron Weasley™ and Hermione Granger™ as they brew powerful Polyjuice potion. Drinking it transforms the characters into Vincent Crabbe and Gregory Goyle, which kids achieve by turning the minifigures’ heads to reveal an alternative face and adding a different hairpiece. The magic can go awry, however, such as when Hermione transforms into a cat! There are other surprises too: an exclusive, golden, anniver