Discover tons of exciting pranks, jokes, and hijinks from the films of the Harry Potter in this hilarious and interactive book with a paintbrush that reveals hidden messages.Ever wanted to tell a joke like Fred or George Weasley? See Wrackspurts like Luna Lovegood? Or leave class early with a Skiving Snackbox?In this fun and interactive Water-Color! book, you'll use a water-activated paintbrush to reveal:- Who used a Love Potion on whom- The Weasley twins' impressive Wildfire Whizbangs fireworks show- Hidden creatures like Thestrals, Pygmy Puffs, and Animagi- And a whole lot more!This amazing book is filled with adorable film-inspired art. The paintbrush is activated with water, so it's completely mess-free!