I feel it crazy when playing medusa, so I make a mod to make it even more crazy.
Starting deck is 52 stone cards. All playing cards from all ways (Standard pack, Certificate, Magic Trick, Incantation/Grim/Familiar) are always stone. All cards that may unstone a playing card are banned (Vampire, Midas Mask, enhance Tarot cards except The Tower).
(Actually, Incantation/Grim/Familiar never spawn stone card in vanilla, but i decide to make it always instead of banned.)
The mod is available at https://github.com/WYXkk/BalatroMods, the 'Stone Deck' folder. Requires Steamodded to play.
If you find a cheese to make a non-stone card, please leave a feedback.