The intricacies of game mechanics

By the way, I remembered something: although I can’t prove it, I’ve noticed many times that the AI in battle always knows what artifacts your hero is wearing. Here’s why: it never casts a spell that wouldn’t be beneficial to it, considering the effects of my artifacts. I can’t recall a specific example right now, but there were situations where one spell seemed obvious, which it could have cast at that moment, but it suddenly cast a different one. And this happened more than once! In particular, it seemed to “sense” that I had the Sphere of Vulnerability.