I think a gambling addict wouldn't be so mad about being forced to gamble for eternity...
I like the loop take on this one, where you are using the information you made to give yourself an advantage within a card game. Although, I think it can be kind of hard to remember everything, especially when you can sometimes just autopilot blackjack, and only really look at the card totals, and not the cards themselves. Because of this, I think it could be nice to show the player things that they should know. Like what cards will be drawn on both sides if they have seen it before. Since this just removes a layer of remembering the player needs to do, (and could do themselves via pen and paper), and focus on how to change the outcome of it.
For a game with eternal gambling, I think that only having 2 resets is quite small. It's definitely one of the more interesting mechanics of the game. Either raising the amount that you have from the start, or making it purchasable with souls would help.
I like the idea of having modifiers to change how your hand is drawn, and I think it would be interesting to keep seeing if there are any other routes you can take for deck modification. Of course, there is the basic +1 -1 to next card drawn and basic number changes, but I think specifically playing with the knowledge you may have of your deck is more interesting. Like a peek a the first card, or make the next drawn card a guaranteed number.
But, if you work in more elements like this, you'd like need to make the devil respond accordingly and make the game harder. And then were getting into roguelike territory, which is a whole other ordeal.
I like the presentation, and the narrative / setting is pretty interesting. Good work!