"War of the Strongest"

The clone lasts until the end of the battle; magic power doesn't matter.

That's what it says in the game manual, but why did it disappear in the actual game, even though no one was attacking it? I checked on both versions - patched and unpatched - what's going on?! Maybe it lasts until the end if you're a Water Magic expert? But I didn't have any Water Magic skills. Can anyone explain this clone issue in more detail?

Where did you get so many harpies??? I only had a maximum of 40.

Well, at the beginning, they gave you that many, I think. And then you had to build quickly, capture harpy dwellings, and choose summoning portals in fortresses so that harpies would appear there when building and when they were born, plus Legion of the Dead units.
For the first major battle, I had 120 harpies - that's from two fortresses and three external dwellings. And then I managed to add only 30 more. There were more harpies, but no one could manage to send reinforcements because the main hero was running around like crazy with these harpies. Or rather, there wasn't even an opportunity to send new harpies because all the heroes and money were used to move the main hero to the necessary areas and, accordingly, to send him his 150 harpies in chains.