What cards would the casino add or hold out to give them an advantage at craps? Every number on a die can make a seven which is the house number. I do agree that if they do not use a continous shufler that it is possible to get an advantage if counting cards. The house advantage at craps is so small that any ability to count could give big rewards. For example, you will never get rid of sevens but if a lot of large numbers (4-5-6) come out you may want to place the 4-6. If a lot of medium numbers (3's and 4's)came out you would want to play the field which is all high and low numbers. I sure would love to play with a computer program to figure all of this out.