76386 LEGO Harry Potter Chamber of Secrets Hogwarts Polyjuice Potion Mistake

LEGO 76386 Hogwarts Polyjuice Potion Mistake is a Harry Potter Chamber of Secrets set released in 2021, containing 217 pieces and 4 minifigures. It includes Harry Potter, Ron Weasley, Hermione Granger, and a golden anniversary Harry Potter, with transformation elements that let characters become Vincent Crabbe, Gregory Goyle, and a cat version of Hermione. The bathroom build features a sink with a secret tunnel that connects to 76389 Hogwarts Chamber of Secrets and integrates with 76387 Hogwarts: Fluffy Encounter and 76395 Hogwarts: First Flying Lesson. The set also includes two random collectible wizard card tiles and was available for pre-order on LEGO.com starting April 21, 2021.

A new and sealed Hogwarts Polyjuice Potion Mistake is currently valued at around $30, with annual growth of about 11.5% that is expected to level off to around 7.5% in the coming year. The average used price is $15 for those in good overall condition. Based on current trends, this set could be valued near $31 within the next year. The 4 included minifigs account for approximately 36% of the set's total value. The set was available for 30 months, from June 2021 to December 2023.