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By the way, regarding "mysticism" - I think it's a pretty good skill! It has saved me more than once :)
I used "eagle eye" in Heroes 2, by the way, not so long ago ;)
sorry, but I don't have Heroes 2... I just never take it, and there are a couple of maps where you have to defend a Castle from 7 opponents.... but that doesn't happen very often either. I prefer scouting...
And if we talk about "logistics and pathfinding" - yes, they are good, but I think they should be combined somehow :D, i.e., take both for the hero ;), although of course it also depends on a specific situation...