Here are a few more questions. I think I know the answers, but they aren't clearly defined in the Manual. Does the "Intelligence" skill and the Hero's "Knowledge" stat both increase the maximum mana pool? Because it's not entirely clear what "maximum spell points" means. Or, simply put, are "spell points" the same as "mana"? Then, does the "Magic" skill increase magic power, i.e., does it enhance the Hero's "Spell Power" stat? And does that increase the power of spells?

Added 4 minutes later
Then, I thought of something else. Is it worth leveling up the Catapult? I leveled it up once, and it destroys walls in 1 or 2 hits, but it doesn't really help, because I still don't enter the city. Either the enemy comes out on their own, or I destroy them from a distance. Also, is it worth leveling up "healing" and the ballista? Because the tent and ballista can be easily destroyed during battle. Besides, the tent already heals, so why level it up. The ballista already shoots.