Test the imagination of your audience with a real-world miracle. Dalton Wayne performs in the real world for real people, and this has become his go-to card effect when he needs to really hit them hard. This is Back Talk by Dalton Wayne
Here’s what happens:
The spectator shuffles the deck any way they like, then they select a card and return it to the deck. The audience shuffles the deck again, but this time behind their back. When they bring the deck out from behind their back they imagine removing turning the card face up in the deck. When they spread through the deck reality matches their imagination. Their card is the only one face up in the deck, and everything is examinable.