Dirty_Player
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Of course, all the information is outdated, because Heroes 3: The Shadow of Death is updated every year.
It should also be added that flight works like pathfinding, corresponding to the level of air magic. Wings provide expert pathfinding.
Also, there are fountains, flags, and oases that can boost a hero's movement points to 10000+. There is also a bug - "carrying neutral creatures" and "double stable," but these are details that are not relevant for online play and I don't think will be of interest.