As I understand it, without fulfilling conditions a), b), and c), any owner of a 4th-level spell and a Tantrum can use their spells in any battles, except against enemy human heroes. And fulfilling one of these conditions is only necessary for battles against a human opponent, right?

correct, but there are also scrolls - they can be used
Quote:
only after fulfilling the sub-items a, b, c of item 5.2.

if you are talking about transferring spells, then my opinion is that it would be fairer for new owners to use them with the same rights as the old ones.

By the way, can you add anything about my other questions?

throughout the game in any of the cities on the map, right? and if the computer does it, can it not be upgraded or can improved versions not be bought?

2. Map settings options:
people – 2; computers – 0; teams – 0; map size L+U; templates – by agreement, but I recommend 2sm4d(3), – for this you need to download the file attached at the end of this post and unpack it into the "Data" folder; no water; strong monsters; difficulty 160%; time limit per turn – 4 minutes.

and if with flight, wings, or a dimension door, do you also need to break through the guard, or can you do without breaking through in this case? judging by the restrictions on angel wings, in this case I understood that it is possible?

again, the same question as in the previous item. That is, improved vampires, phoenixes, fairies, and ultimate elementals can only appear in the game from Pandora or the mercenary camp?

so far, I will be very grateful for clear answers.