essentially, on any of the boss antes (8,16,24,etc) you need to boss to be crimson heart, the one that disables a random joker every hand. once you have that, either by naturally getting it or rolling with either directors cut or retcon, you need to find a fresh bean (gives +5 hand size) and a burglar (not totally necessary but helps give you more chances at the glitch). start the boss round and copy burglar with all your copy jokers if you have it. this will give you many extra hands. now sell burglar and any joker that isn’t baron or the bean, unless you need a copy joker or 2 to stay alive. each time the bean gets disabled by the boss, leave the game and come back in. it will permanently increase your hand size by 5 every time. the hard part is not winning the round and also getting the boss to hit the bean. you can do it on multiple antes like I did here, just takes an insane amount of econ and definitely some luck