All magicians know some version of the three-card trick where the spectator tries to guess where the lady or the red card is. Now they also have the electronic version L.E.D. Monte. Show a lithium battery and three LED bulbs. Light the LEDs and show that two are red and one is green. Use three shot glasses to cover each of the LEDs and mix them up in front of your audience. The viewer will never guess where the green LED is. This effect is under the total control of the magician. You can let them win or... let them lose. The effect is supplied with the three special L.E.D lights and an ordinary lithium battery. The Monte LED has an automatic reset making it ideal for close-up magic. No manipulation required.