[Valerius]

I think Yomi is likely in the role of kingmaker. Assuming Helheim is defeated, I expect TNN would have too large a lead for Yomi to have a chance at the win. If Yomi and Helheim attack TNN and win I think there would be a similar situation, this time with Helheim the likely winner. I guess there's an outside chance that Yomi could declare peace with Helheim, let TNN and Helheim fight it out and weaken each other and then attack whichever seems to be winning but I'm not sure Yomi currently has enough provinces to make this viable.