1. Prior to L-day, level 7 creatures aren't even built, the capitol also isn't built, you immediately take the army and go into battle, that's where you get money, experience, and an army (external dwellings, conservatories, hives).
2. Angels are very expensive (the most expensive), more is written in the physics of the world of heroes (physmihe), I can recommend watching a couple of streams from experienced players in the Tournaments section for Heroes III (tournaments on HeroesWorld), there you can also arrange to play a game.
3. But in general, the game consists of calculating what to attack with, having already counted how many creatures are in the guard, how to fight, and sometimes how much damage a stack will deal.
2. I watched until I nearly banged my head on the keyboard — it was tedious and boring, but informative. I'll try playing online for the first time in about a week.
3. And how do you calculate how many are in the guard or the guard of a Dragon Utopia??? That's why you wander around them, then go in, and it wasn't even worth it anymore. Calculating damage, how much health, etc., is probably interesting, but I don't want to; I want to play.