The magician shows a deck of cards, the spectator chooses one of them, then sign it to make it unique, in the end pushes it into the deck.
The magician shows a needle lying on the sleeve, and says he wants to find the chosen card with the needle.
At this point the magician puts the needle in his mouth and spits it against the cards!
Showing mouth completely empty and in fact the needle pierced the chosen card!
A wonderful trick that can not miss in your repertoire. What aspects?
Warning the trick is for people who are over 18+ years.