Money farms.Was fishing for a quest fish in the forest when my Twins minion killed a blue slime and a Slime Staff dropped. Didn't even notice it right away as it was off-screen and it was a very good thing that I had manually flew back towards my home instead of warping there, or I'd never have seen it.
The very first one I had ever seen! Too bad it dropped way too late for it to ever be useful whatsoever.
Money farms.
Most of them require slime staffs.
Slimes do less damage. It all has to do with the lucky coin and high health enemies. If you are insanely lucky, you can get 4 platinum out of a Lihzard with a lucky coin and slime staff.Why slime staff and not, say, spider/pirate/raven staff?
I got a pirate invasion my 2nd day in hard mode and from it came a cutlass, well two, but I sold one. This is on my current playthrough, and I had just enough money left to reforge it and got Legendary! The thing is beast mode compared to the Ore swords.