New lesson for an old favorite
The lesson I learned here is that points can just explode within a single turn. I had learned it once before, but eventually forgot it. Nurgle can realistically win before anyone else could get their dial victory. Before I get into an analysis of what's theoretically possible, here's what actually happened in my game. 1 region had already been ruined (Border Princes). Guess what happened next. 4 more got ruined in one round, so the maximum 5 would be all done. What's even better, all 4 of those were every last populous region! Nurgle got Kislev all by himself, I got first place with the next 2, and tied with Slaanesh for first in Estalia. Provender of Ruin + domination of Kislev + ruining Kislev (also dominating 2 1-point regions) would get Nurgle 27 points, over half the score track! It put him at 51 points. That was nice, but look what it did for me. I was a ruiner in 3 regions, making 4 + 5 + 5. The Empire and Bretonnia got me 1st place each, for 11 + 10. Tying 1st in Estalia got me another 5. That got me 4+5+5+5+11+10, 40 points!!!!! I don't know if I got any domination that round, but just 40 points alone ended up putting me at 56 total.
So, check out the scenario again. Even if I didn't dominate anything, I was sitting at 16 points, Nurgle at 24 with Provender of Ruin (I didn't peg him to get quite so many points, though), and the other 2 were both a double-advancement away from victory. Can you imagine how I felt right there? I pegged myself at 3rd place in likely victory, because I did notice some regions very crowded with my corruption. Seeing this big chain reaction of 4 ruined regions, especially being such high-scoring regions, just totally made my day.