Onlyonehousecanwin.Withcelebrityguests,originalfilmactors,andtheHouseCupatstake,HarryPotter:HogwartsTournamentofHouseswillbethegreatestfancompetitioninWizardingWorldhistory!CatchGryffindorvs.Hufflepuffinthefirstmatch11/28at8ponTBSandCartoonNetwork!