Interesting, I found necromancy to be very powerful as I enjoyed playing it in a slow idle pace but maybe you play style is more active then mine 😊
UPDATE - 20th of September, 2020: Necromancy now scales with stage you're in!
Necromancy seems to be in a pretty better state now. I'm not sure of the balance because of the skyrocket you get from all the achievements but it seems good (well balanced before 150 and it makes the generation less frustrating).
How does it scale though? Is it like 1% for every three stages?
Actually necromancy is a must now in later stages…10 levels of prosperity give as much as 1 stage gold bosss which isn’t rly as good as necromancy…