Any hints or advice for filling the greed machine? I'm up to 20% jam rate and it's basically jamming every 2 coins. I'm aware of the glowing hour glass exploit but I almost never see that in the shop, and it apparently only works 5 times per run.
Any other tricks?
Most of my isaac experiance is anecdotal and semi recent (the switch) without an in depth understanding of the game from outside sources. I did read online how greed mode works though and this is my experience.
Every character has their own individual jam chance and they all start off at 0% and go up from there at a fixed rate. Although I've had it jam in as little as 10 coins at 0% I think it's safe to say that 100-150 coins in 2-5 runs per character is a consistent enough rate if you play your cards right. I was able to go from 180 to 999 in a few days. Hours really.
There are many ways to end up with unlimited coins/ easy greed mode kill builds. Just gotta pay attention to the store and learn when a run isn't worth the time. D20 + store bought battery is the easiest way to break greed mode but there are others that you should look out for. Blank card + Jera (which I found several times in the curse room) / 2 of Diamonds can also lead to unlimited coins and then there are items like D4 that can surprise you with a game winning build.
2 of diamonds/ Jera in general can lead to a good build and a greed kill with 90+ coins and indeed taking full advantage of item spawning familiars, battery charging items, cards, curse/ devil/ angel rooms, secret rooms, and whatnot will eventually open up greed mode in ways that you probably never even considered. Just gotta be creative.
Although none of it is as good getting the perfect hour glass combo I found that learning how to game greed mode in earnest was much more fun than constantly rerolling until getting the perfect combo.
Fuck cursed eye though. As amazing as the item can be you have to know when it's not worth bringing a character into the final boss with it.