It's usually advisable to hold onto a card until you can use it effectively, though, if it has the potential to block an opponent's progress or complete a meld for you. When it comes to throwing away power or wild cards, timing is also crucirummy ginal. Even though these cards have the potential to be extremely valuable, there may be times when keeping them instead of playing them right away is more advantageous. For example, holding onto a wild card might enable you to thwart an opponent's plans at a critical juncture if you believe they are about to win. Eventually, practice and careful attention to your hand and your opponent's tactics are necessary to become proficient at determining when to discard and when to hold.