Knights of Tezoth

I still don't understand why he took Ferlyuts, didn't leave Nebka a wyvern, and even killed you

I was hoping to still get you with the nail and thought that if you lost your pumpkin, my chances would be slightly less than zero. But in the end, I still never got you...
And my last hope was on the retaliation from Ferlyuts and the blood flow when you two would be left 1 on 1. But that wasn't meant to happen either...

Stefania would have needed to keep casting for about 70 turns straight. Not impossible, but highly unlikely. Statistically, even without the blood flow, she was taking down Ferlyuts within 35 rounds.

Yes. But there were no other options to counter the organized coalition "Let's let the NPCs suck" anyway...

At this stage, indeed. As I already said, for Ferlyuts the priority should have been Stef, not Alsira. Or Churchell, if she had survived. Such is the nature of the competition.

Yashchur motivated it by saying that taking out the team leader was priority #1.

Yes. That's exactly right. A leader is a leader. Plus the speed bonus, and the ability to move anyone first, given she was first in initiative. You also took out Drozdrang among the first, didn't you...
The funny thing is that Heroist was afraid of dying from the pumpkin, but at that moment it wasn't actually a threat to him. The Chocolatier would have hit you if there was a need. But Ferlyuts with Avesom is a different story... For them, Alsira was the primary target. Next was Stefania, but it didn't work out...

Well, as you can see, the priorities turned out to be wrong. I understand the logic, but I don't fully agree with the argument, in the context of the original ones. You should have used Drozdrang to rush Stef and take her down. Good chance she wouldn't even have remembered the retaliation and would have fallen.