Added after 17 minutes
By the way, Eagle Eye was used during the walkthrough of Qin the Supreme. I just didn't recall it right away.
Added after 1 hour 34 minutes
I also thought about a variant of preserving the Cloak of the Undead King. If we don't give away the Cloak of the Undead King, then Gunnar is not freed, we don't gain access to the tower with Luna, which means we remain on the necrolands with Luna until the very end of the map, when someone brings a Book of Earth. At the same time, there are several quest guards that only Luna can open, so it's unclear at first glance how critical the consequences of such a decision would be. It seems that Isra and Vidomina on this map are specifically tuned for gathering skeletons, not liches :)