the sign in elster/miser's cave means something like this....
"you can clean an old red crystal with this waterfall" or...
"you can clean an old red crystal with oils in this waterfall"
my sister is making a webseries on youtube of it, it hasnt finished nor started because she and i are still working on it.
please check out her youtube channel!!!!!and mine too!!!!!
hers: Melodyboo Graal
mine: BootlegMC/CobraGraal