8. We approach the merchant and buy:
::EXAMPLE:: - shield +2 defense, sword +3 attack, hat +1 knowledge, +2 magic resistance, and boots +25 health. Hero's stats: +3 to all stats and 6 health regeneration per second.

So, how are you planning to create a map? What's with the 6 health regeneration per second? The hero doesn't even have health and doesn't participate in battles! If the idea is based on scripts, then what you have in mind is not applicable at all to Heroes 5. I recommend you create a chaotic scenario or an RPG map; it will be much more interesting than a remake of Dota (of some kind). And I'm not criticizing anyone, and believe me, this isn't nonsense; I'm just giving you advice on how to do it better.