Slitherine

Talking about the event that allows you to buy +5% buffs. Getting that +50% culture buff is fairly important but i cant figure out how to trigger it. Thought it was academies but after 200+ turns and alot of academies only got it once

it comes from academies, but its rare. Make sure you clear out your decision queue, even if it just means swapping money/men/metal just to use those up.

for comparison, I've had it once in about 120 turns since I built an academy.

I wish there was a list of all this important late game stuff. I'm usually too lazy to play SP games for long, so would feel out of my depth in late game MP

It will not be proposed, at all, if you are under 2500 money (and will cost much more than that).

Also ,you have double chance if you are in CL3, not 2. (and 0% if a mere CL1)