This entails observing the sets & runs they are making as well as being conscious of the cards they might require to finish their combinations. You can strategicarummy nobellly choose which cards to keep and which to discard, as well as which cards to grab first from the discard pile, by keeping an eye on your opponents' melds. In general, using the power of melding effectively calls for thoughtful preparation, strategic thinking, and awareness of both your own & your opponents' combinations.