Upgrade or alternative upgrade?

Okay, here you go, write something according to these rules. I hope it will be at least somewhat Useful and New. Otherwise, everyone just likes to chat. There isn't a single worthwhile post from you in this thread, not to mention about these "rules." The guys are at least saying something that might be useful for beginners, so thanks for that. P.S. To avoid a repeat of the situation like: "Deadly Cold" will deal minimal damage to the enemy's ballista," you need to read the theory.