Odds

In any deck, there are 54 cards. I made the chart below with the expected odds of a random card giving you a particular bonus. When I say "right" or "wrong" it refers to the card in question matching the attribute of your action.

+1: 1 in 2 (the wrong number card)

+2: 1 in 3 (the right number card or the wrong face card)

+3: 1 in 18 (the wrong ace)

+4: 1 in 18 (the right face card)

+6: 1 in 18 (The right ace, plus both jokers)

So you can expect a random draw from the deck of 1 and 8/9.