Players should also be aware of the cards that their rivals have discarded, as this can reveal important information about which cards are safe to pick up and which ones should be avoiderummy homed. Recognizing Your Rivals. Observing the movements of your opponents is another essential component of strategy. You can learn more about their hand and modify your strategy by keeping an eye on the cards they pick up & discard. Making Strategic Use of Jokers and Wild Cards. Jokers and wild cards can be used in Rummy Gold 51 to replace any other card in a set or run.