Devil's Advocate

A reader reads a statement from a card, and the remaining players have one minute to debate it. Each debater then plays a card that indicates i) whether he believes the reader will agree or disagree with the statement and ii) the number of points (1,2,or 3) that the debater is willing to risk on his guess. Each correct debater keeps his card with its points. The next player becomes the new reader. The first player to 21 points wins.