Description
"I solemnly swear that I'm up to no good." Simply recite this phrase and tap your wand to learn the location of every nook and cranny of Hogwarts. The exterior of this color-changing heat-sensitive mug turns from black to hot liquid to reveal a color image of the Marauder's Map, along with the two magical phrases designed to use it. Whatever you're up to, this mug (and your morning coffee) will help ensure your mischief is 100% managed.