Angel Shade is a form of Juice that can be used for many different games. In this case, the cards are marked for 21. Knowing what card the dealer has in the hole and or what card is coming off of the top of the deck is very valuable information. These cards will give you an unbeatable advantage in the game of Blackjack or 21. Note these cards are marked for the hand dealt game, not a game dealt out of a shoe.