(I think It's cool you have an idea with the codes 
, though I don't know how to help)
#[Help] Ace In The Hole Deck
white fossil
upper tangle
This sounds like an amazing idea. I wish I could help but I know nothing about coding at all
pallid tiger
In the case of Balatro you can unpack the game's Exe like an archive (with 7-Zip) to look at the game's code which helps for modding.
For your mod, you can solve it e.g. with the method start_dissolve of cards, like so "G.playing_cards[idx]:start_dissolve(nil, true)".
I added a working mod-file with some superfluent code that first turns the cards into glass cards to demonstrate things you can do. Feel free to use the code or parts of it as you want.
random summit
This code is awesome and has given me a couple ideas on decks I would like to build next. There are a few things I needed to change so it didn't mess up other mods (Steamo's Deckof4s, more of a that mod issue really) but other than that I'm keeping it as is! I hope you don't mind but I'm adding you to the author line. Thank you for help!