Discussion about Heroes I.

I already asked, but I'll ask again just in case. Is there a faster way to find out which spells are in the Tower, naturally requiring level 4? Or is the only way to collect 20 of each resource? But that might take 10 days of gameplay, and there's no market. It would be more of a rough exploration than actual scouting. Maybe there's a cheat program – you load the initial save once and that's it. I'm only interested in one spell. Essentially, this is the only thing that could change the strategy on this map.