Poker Cards:

Xiao Wang: Joker will teleport you to the angel or devil room

Club 2: 2 of Clubs will double the number of bombs you have. If you have no bombs, you are given two.

Two of Spades: Doubles the number of keys you have, giving you two if you have no keys.

Diamond 2: 2 of Diamonds doubles your number of coins, giving you two if you are not concealed.

2 of Hearts doubles the number of hearts you have, and cannot exceed the upper limit of blood volume

Four hidden cards:

Suicide King: Suicide King kills your character instantly and drops a lot of drops, props, and boxes. If you have resurrection props, you can be resurrected (currently only 1up mushrooms have been verified to be resurrected)

Chaos Card: Chaos Card Throw this card forward, killing all enemies along the way and opening ordinary doors.

Credit Card: Use the Credit Card in the store to get all items in the store for free. It has no effect when used outside the store.

Rules Card: Rules Card is a one-time item that will display a line of mottos similar to an oracle after use. No other hidden effects have been found yet. ?