Here’s what your spectator sees: a card is selected from any deck. It’s a free choice– no force. Signed. The card is then lost in the deck, then shuffled. The cards are then dribbled on top of a sealed Ziploc bag.
Slowly, the bag is lifted up from underneath the chaos of cards to show that one card is sealed INSIDE the bag– the spectator’s signed card.
Credit note: Inspired by an effect by Anthony Miller.