what does the joker card do in binding of isaac The Binding of Isaac: Four Souls Requiem - English

what does the joker card do in binding of isaac The Binding of Isaac: Four Souls Requiem - EnglishReturn to Mom's basement with Four Souls Requiem: a vast expansion that almost doubles the number of cards in the game! With more than 260 new cards, including 20 new characters, the game has just got even bigger and even better! Play as the new tainted characters, take on more iconic bosses, gain many more powerful and iconic items, and mix things up with a whole host of useful new loot cards. The Requiem expansion also comes with a whole new deck:

Return to Mom's basement with Four Souls Requiem: a vast expansion that almost doubles the number of cards in the game! With more than 260 new cards, including 20 new characters, the game has just got even bigger and even better! Play as the new ‘tainted’ characters, take on more iconic bosses, gain many more powerful and iconic items, and mix things up with a whole host of useful new loot cards. The Requiem expansion also comes with a whole new deck: The Room Deck. Add more than 60 room cards to your game, each of which mixes up the flow of gameplay in interesting ways for new and experienced players alike. The new cards and new deck are an exciting addition and a must-get for fans of the base game! Discover even more killer combos and interesting interactions as you race to four souls, striking deals and betraying your friends on your way to victory!

The Expansion Includes:

• 269 Requiem Expansion Cards
• 12 rebalance cards for your copy of The Binding of Isaac: Four Souls Base Game 1st edition.

You must own a copy of The Binding of Isaac: Four Souls 1st or 2nd Edition to play Requiem.