2 OF CLUBS ITEM MULTIPLIER
Doubles your current bombs. If you have zero bombs it will give you two.
2 OF DIAMONDS ITEM MULTIPLIER
Doubles your current money. If you have zero coins it will give you two.
2 OF HEARTS ITEM MULTIPLIER
Doubles your current red health filling the empty red health containers you currently have. Does not affect soul or black hearts.
2 OF SPADES ITEM MULTIPLIER
Doubles your current keys. If you have zero keys it will give you two.
JOKER ???
Teleports your character to the Devil/Angel Room for that floor.