Harry Potter - Marauder's Map - One 11 oz Morphing Mugs Color Changing Heat Sensitive Ceramic Mug – Image Revealed When HOT Liquid Is Added! – Officially Licensed Merchandise

€œI solemnly swear that I am up to no good.€ Just recite the phrase and tap your wand to learn the location of every inch of Hogwarts. Here, we offer a slightly different brand of magic. The exterior of this Morphing Mugs heat-sensitive, color changing mug transforms from black as hot liquid is added to reveal a full color image of the Marauder€s Map, along with the two magic phrases made for its use. Whatever you€re up to, this mug (and your morning coffee) will help insure that your mischief stays 100% managed.