The Forming Process Begins Early. You will have more options for discarding and picking up cards as the game goes on if you concentrate on forming sets and vulkan slotsruns early on. Monitoring the Moves of Opponents. Observing the cards your opponents are discarding and picking up can also be very helpful in determining which cards to keep or discard because it can provide you with important information about their hand. Preparing for the Game and Keeping High-Value Cards.