How do themed decks work in multiple-device matches?
In Online Video Mode, each player chooses their own deck at the start of the game and that deck will be drawn from when that player is the Clue Giver. If a player chooses the Celebrities deck, when they are the Clue Giver all of their cards that turn will be from the Celebrities deck. Everyone else will see those cards, but no-one else will be able to draw cards from the Celebrities deck unless they have also chosen it at the start.
In Local Party Mode, the host selects the deck that all players will use.