I’ve had so many people on my blackjack table complain when the floorman changes the cards. The #1 thing I hear the most is, “You know we’re on a winning streak! You’re changing the cards to make us lose.” That’s bullshit. In the 5 years I have been dealing I have only seen that happen once and the guy had won about $20,000. The casino doesn’t care about your $400 win; that’s pennies to them. The casino will change the cards on every hand held blackjack game or any other game where the players are allowed to touch the cards. They change them every 2 hours because, after a while, the grease, ash and dirt from people’s hands end up marking the cards accidentally. So whether on accident or on purpose the casino will always change the cards regardless. The used deck is then sent to a company that cuts off the edges so that way they can be sold in the gift shop with no fear of people trying to use them to cheat.