You remove three ESP cards from an envelope. A square, a circle and a star card and place them face up on your table.
Your spectator selects any one of the cards. A free selection. They can even change their mind. Once your spectator has committed to one of the cards, you reveal a prediction proving you know which one they were going to pick all along.
No forces, no sleights and no switches.
This is a very simple method with one of the most powerful reveals in the history of magic.
