"Master of the Dark Arts." Sure, Voldy, sure you are. Look at that little face. Preciously malevolent! Add hot liquid to this 11-ounce Harry Potter Chibi Voldemort Dark Arts Heat-Sensitive Morphing Mug and watch as the heat-activated process magically transforms the ceramic mug from black to a vivid full-color image of Voldemort and Nagini. Aren't they just the cutest evil duo this side of Azkaban? Do not microwave. Hand wash only. Not dishwasher safe.