Since I'm a fan of playing roulette myself, I came up with the next card.
Action
$ 4
Look at the top three cards of the Casino Deck and play one of it. If the card would leave play, return it to the bottom of the Casino deck. During the clean-up phase, return the played card to the bottom of the Casino deck.
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Set up: At the start of the game, make a Casino deck made with X action cards that are not in the supply. Shuffle the deck and place it face-down.
What do you think of this card? I placed an X because I don't know what a safe number would be. If you really would go into thema, it should be 36, but that's only possible if you have a lot of expansions.