Secondary skills in Heroes 3.

I do love experimental ideas, but I think with such a tactic, you won't survive not only against a human player but also against a couple of computer opponents on 200% difficulty.

I won't argue, as I can't prove anything anyway. We just need to play against each other sometime.
At the beginning, it was indeed an experimental idea. I always play on 200% difficulty, on XL, against 7 computer opponents. I used this tactic even against a human player.
Against a human player, of course, the number of heroes is reduced, and then you buy strong enemy heroes.
I just haven't played in tournaments yet; maybe I'll try this tactic there.