This is a snap visual change of a playing card.
A card is shown front and back, and instantly changes to an entirely different card, when tossed up. The Card can freely shown front and back. You are supplied a special mechanical card that changes when tossed up.
A typical presentation would be to place this as a prediction card in pay envelope, already set up so the wrong card shows..
Force card that is to finally appear from a regular deck.
Remove your prediction card from envelope. Show the card front and back to audience. They say your prediction is wrong.
Toss the card up and it instantly changes to the correct card !
Comes ready to use, (we even supply a suitable pay envelope ) for Red and Blue back cards. Specify back color when required. We cannot supply specific cards changing to specific others.