@lipexh here some math!
In 2 hour i task ~300 necros,
the waste you made in this cave you´ll get back easy with selling the soul stone on antica they up to 800k!
So if i make 150 necros/h i need 26h to task 4000 necros if i have now a waste from 10k/h [What issnt so] ill waste in total 260k and ll get 800k for the stone!