If you declare "777" but make a mistake in your sets or runs, you must pick up all of your cards from the discard pile as a penalty. Skilled players can use bluffing to their advantage and shape th7 slots casinoeir opponents' decisions to create sets & runs that add up to 7 or multiples of 7. 2) Is it possible for me to remove more than one card from the discard pile during my turn? No, you are only allowed to remove one card from the discard pile during your turn. 3) Can I use wild cards in 777 Rummy? Absolutely, you can use wild cards to form sets or runs by substituting them for any other card.