This came from an old magician’s estate purchase. The Aviator bridge-size cards are in like-new condition!
Effect: A spectator names any card in the deck as you openly show their faces. Wouldn’t it be amazing if the spectator selected the only card with an odd color back? Sure it would! But, imagine his/her reaction when every card in the deck then changes to a new color right before the spectator’s eyes!
No forces; no sleight-of-hand; no switches of cards, no way!