Collecting Data from Counterparties. Also, players ought to keep an eye out for the cards that their rivals are discarding, since this might reveal important dreactoonz slotsetails about the cards they own. Players can learn more about their opponents' sets & runs by observing which cards they are pulling from the closed or open deck. One can use this information to modify their own strategy, possibly keeping cards that opponents might need or discarding less likely-to-be-useful cards.