Duel in Paradise

Sorry, but please explain in more detail: Generate Hero in town, but doesn't this function require selecting a specific hero?
I know that tasks can be set in the editor. Please explain this option.

I downloaded the map, played it - overall, I liked it, but since the map is a duel map, the main disadvantage is the balance: too many mines - a huge advantage for knights and mages.
And I think it's better to make the artifacts random, rather than pre-defined sets.

Think about the title: a duel in paradise! The map is designed so that heroes on both sides can develop without problems and have an "epic" battle! Mines are one of the parts of this paradise!
I put in the most useful (in my opinion) artifacts. Others can be bought in the cart near the town.