Omega by Max Major

Instantly know the exact card your spectator cut to, without ever touching the deck.

You give the spectator a deck of cards - and ask them to spread through it to make sure all of the cards are different. They can even shuffle the deck! You ask them to cut the cards wherever they want - and remember the card. 

You never touch the deck. And it’s done - you INSTANTLY know what card they’re thinking of.