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As far as I understand, the rules are now established. I personally encountered an interesting situation: a computer-controlled hero passed through a skeleton and dug up an artifact. According to the rules, I wasn't allowed to access it (FAQ 1, Heroes), and I spent 2 hours just making the computer dig up the artifact I needed, which I then took in battle (there were a lot of battles during the turn). Here, I naturally raised the question: wouldn't it have taken me much less time to dig up the artifact myself? And everyone would be on equal footing – get the artifact you need from caves, skeletons, and so on, and then use it in battle. But in general, I think I played poorly precisely because of the hero-digging mechanic not working properly. I was leveling up the first heroes I found, and I couldn't fire them or dig up new ones. But that's just my problem.