You can use this to learn important details about the cards they might still need to finish their combinations. If one of your opponents is using multiple joall rummy list 51 bonuskers, for instance, it might mean that they are about to go out and you should focus on setting up your own combinations before they do. Not only can jokers be very important in Rummy 7777, but wild cards can also be. Certain cards are called wild cards, and they can be used to replace any other card in the deck.