Upgrade or alternative upgrade?

1) Regarding the wall of fire, you are right. This happens quite rarely. And in general, the purpose of the ability isn't that. Sometimes, by moving an archer stack closer to the enemy, you can deprive them of the ability to attack. And that's actually quite good. 2) Actually, who forces you to attack them specifically? If they are enemy troops, you definitely won't see any exposed archers, and the ability will help you "expose" them. If they are neutral... Then you can reach these archers before their turn (there's a chance if the archers are new; if they are old, then the bears almost always go first), and therefore, kill a significant number of them. You can definitely break them into two stacks to hit more stacks and possibly reduce losses. Even if they are pushed back, they won't deal colossal damage, because they are too vulnerable and many of them will die. 5) Let me explain: Liquid Flame is nothing more than a mini-fire wall, to use your terms. It doesn't deal that much damage, but at the same time, the upgraded unit loses its lava shield and dragon's breath... And Helmar only has 3 of these dragons. That is, the damage from one such "mini-fire wall" is only about 30 units... I don't consider this to be significant at all.