Great map, Master! Very interesting and well-thought-out, but I have a couple of questions:
1) Is it intentional that the dragon set is missing a helmet and a sword?
2) It crashes frequently when trying to load a saved game, both in this scenario and in the "Awakening of Evil" campaign. The game is clean, without mods, running version 3.1, and I delete all maps except the ones I'm playing. What could be causing this?

Added after 19 minutes
Path:
C:\Users\**User**\Documents\My Games\Heroes of Might and Magic V — Tribes of the East\Profiles\wildbee\Saves
Files
CustomCampaign.sav
Campaign.sav

Deleting them from the profile makes the map very stable: no crashes or even slowdowns.

Thank you, kind person – you saved me from nervous breakdowns.