A small note during the tournament: while testing the map for the fourth stage, I noticed a peculiarity - periodically, a situation arose where some heroes simply refused to appear in the tavern. In particular, Pyre and Luna are not showing up for me right now. I don't know what this unpleasant issue is related to, but it's a fact. I might have to start the playthrough again to fix this. So, if anyone else encounters the same problem, keep in mind that you are not alone... :) But, it will be even more fun at the finish. Because there are more than enough heroes on the map.
If you give your main castle to the blue player, Pyre will emerge from it on the next turn, so you will have to complete the stage without her:(