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But first, you need to defeat 1500 Red Dragons, and after that, the blue tent will become available. Also, the AI with Titans and Rust Monsters will appear, and if blindness affects them, the battle won't be that difficult, but killing 250-300 Titans will be challenging.
My tactic against the Minotaur was to take a Black Dragon and Harpies, use the Sands of Time to cover the entire area, and after he runs out of mana (which is almost 2k), resurrect the Harpies and kill him. But, besides the explosion, he doesn't cast anything else. I also have a problem with the second Necromancer who will appear in a week. I killed Tamiku and Theodore. But there's a question: Theodore somehow managed to open the Guardian without taking the Green Tent. Although this helped me because he lost some troops, is that how it's supposed to be?
Also, another question: to save time, I didn't take the Water Sphere. Is it even needed on this map? I haven't encountered a place where it would be useful yet.
I also have a guess that I can kill him with magic and steal magic using Imps, but I don't think it will help me.