I've seen multiple magicians perform this and I was wondering if it had a name or where I could learn it. It can be used in a variety of different tricks. The spectator can choose a card, it's lost in the deck and the magician says it (that's just one way it can be performed). One of the coolest ways I think you can use it, is when they think of a card, colour, animal, date, etc. and without telling you, you can say it or show them a prediction that has the thing they were thinking. Does this have a name and if so, is there a place I can learn it? Thanks in advance!