Poison Immunity

This is a combo in Harry Potter and the Prisoner of Azkaban that gives all party members immunity to poison for one magical encounter. Behind the Scenes:This magical effect is only attainable by Chocolate Card combinations. Apperances:Prisoner of Azkaban gbc    http://www.gamefaqs.com/gba/919439-harry-potter-and-the-prisoner-of-azkaban/faqs/30999