Regarding possible influences on the outcome of the battle. Let's say Blue has a scout hero—a non-zero mage with one serpent fly, who has a Death Wave dealing 50 damage in their arsenal. Red, unaware of this, attacks with the weekly growth. First turn goes to Blue; they cast Death Wave, and not all of Red's units die. Red will then say they didn't know about the Death Wave, but do I understand correctly that in this situation, the victory would be awarded to Blue? If I am that Blue player, I will definitely demand that victory.
Let's say Red anticipated the speed and also brought a serpent fly, but Blue accidentally forgot a +1 speed artifact on the scout hero, and the first turn still goes to Blue. Another tech loss? Is that how this is all going to work? One could simply deliberately set up a redraw trap with such cunning schemes. Have I understood everything correctly?