Your spectators will see spots in front of their eyes.
Show a paddle with six different-colored spots on each side. A spectator chooses a color and the matching spot vanishes from both sides of the paddle. One of the spots comes back while the other stubbornly refuses to reappear. Where did it go?
The spot turns up on the back of a previously thought-of card, which the spectator has been holding the entire time. Everything is examinable.
Minimal sleights and virtually no reset makes this a must-have effect. Perform it whenever you're "on the spot." Comes with photo-illustrated instructions, special paddle and extra spots.