Well not much to say just that, monster heal is extreme in regards to how much it heal, it’ll heal them nothing or back to full health, it’s underpowered and overpowered, you really should adjust so it heals a decent amount, like 1/3 of their health, so if they get the 3 they heal fully, but you can still kill them before that.
Agree, sometime mushroom in “inner catacomb” heals for 36000 or 1 hp.
Any healing monster has a chance to do that.