You start with a party deck of 12 cards, and each turn you discard all of your cards still in your hand (that is all the cards that are not destroyed during that turn) creating a discard pile. Next turn you draw another 6 cards from your party deck
Just a quick note Oyvind, you draw your new hand of 6 cards at the end of your current turn, not at the beginning of your next turn. Its not a major difference but can help in planning ahead, reducing downtime.
Plus you can enjoy fondling the cards while everyone else is taking their turn!