What if an audience member’s heartbeat could give a clue about where their card is hiding? Believe it or not, there’s a method that doesn’t involve any medical experience. A volunteer’s chosen card is lost somewhere in the deck. You spread out the entire deck face-up to show it was truly mixed in...

This effect uses the “key card” principle to track where to find the spectator’s card. This means you need to remember the bottom card of the deck. It will indicate where to find your spectator’s card. While hiding their card inside the deck, overhand cut a few piles. Ask them to add in their car...