You want to realize effects have a big impact on your audience ? UNLOAD is for you.
UNLOAD is an amazing vanishing deck but not just that!
Imagine a freely selected card by a spectator. The card is signed and lost in the middle of the deck. You put all in the box and you put it on the table or on the hand of the spectator. And now, you are able to make vanish all the cards except the signed card.