Experience the magic of Harry Potter with LEGO® Harry Potter™ Hogwarts™: Polyjuice Potion Mistake (76386). Join Harry, Ron and Hermione as they brew up a Polyjuice potion in the Hogwarts bathroom, transforming into Vincent Crabbe and Gregory Goyle with the turning of minifigure heads and a change of hairpiece. As with any magical potion, things can go awry - watch as Hermione transforms into a cat! This set includes an exclusive golden Harry Potter minifigure to celebrate 20 years of magic with LEGO® Harry Potter, as well as two wizard card tiles to collect. Connecting easily with LEGO Harry Potter Hogwarts Chamber of Secrets (76389), this modular set lets young witches and wizards create their own Hogwarts Castle model, with endless possibilities for imaginative play. Whether recreating iconic scenes from the Harry Potter series or dreaming up magical adventures of their own, kids aged 7 and up will love the enchanting features of this set. With 217 pieces, this set measures over 3 in. (8 cm) high, 5 in. (12 cm) wide and 2.5 in. (6 cm) deep, satisfying strict industry quality standards to ensure perfect compatibility every time.