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.