Finn, Jake, and Marceline race to round up all the wizards in order to find the one named Ewlbo, who gave BMO a computer virus! And to do so, they're gonna hold . . . a WIZARD BATTLE. Only for the most awesomest wizards, of course! Ewlbo s gotta be around here somewhere . . . Also featuring the backup story The Ice King & His Magical Matchmaking Mini-Comic !