Dive deeper into the secrets of the Land of Ooo with this mysterious mash-up ofThe Enchiridion (the ancient hero's handbook, as featured on the series) with Marceline private scrapbook. All-new, gorgeous, hilarious, and grotesque illustrations? Ancient wizard lore, spells, curses, and jokes? Scribbles from and souvenirs of a cute girl demon growing up? Annotations by Finn, Jake, Marceline, and Simon Petrikov (the Ice King)? Check, check, check, check please!From the same creative team behind the New York Times bestselling Adventure Time Encyclopaedia, this in-world compendium of all things Oooian is a humor-, paradox-, and literary contrivance-filled tome true to the imagination, innovation, and heart of Adventure Time.