However, the mission itself doesn't present any major problems. I captured the Claw in three stages. The first stage involved a "plate" formation with Dark Elf troops, and the second stage involved Nazir with the entire Academy army that couldn't fit with Zehir. As a result of these stages, both stacks of devils were destroyed, and the rest also suffered significant losses... In principle, I could have captured the castle without these "stages," but I needed to find a use for the remaining army ;) Then, with Zehir, I cast Chaos on my enemy (although I could have just attacked directly)).
Zehir had the following artifacts: golden horseshoe, 6 artifacts from the dragon set, tome of power, sandals of the saint... I gave the tomes and low-quality artifacts to the "staging" heroes.