Packet of 10 Flash Cards. These are standard Bicycle Print playing cards, printed onto flash paper. The printing is on one side only.
Place over the spectator’s card and burn for one of the most visual cards reveals in magic! This burns as normal flash paper.
You can either just palm these cards and load them onto the deck, though it's a little trick as the cards are made from paper, but the most common use of them is to put a dab of clear nail varnish on each corner of a card and then lay the flash card on top, this will permanently glue it to the card. The only drawback of this method is that you can't use a signed card.