Hive Leader

I'm playing version 1.0.0 of the map with a hero (wanted a challenge). I captured 7 blue castles and handed over the relics to eliminate the Necromancer. However, the Stronghold he managed to capture remained under "green" control, and I can't retake it – it's displayed as an allied castle. I couldn't find the path to the local Shaman, even using CTRL; it shows the minimum value of 0.10, but there's no path there. Overall, the map is good, but the challenge is diminished because the AI doesn't use summons effectively.

Added 1 minute ago
Also, I assembled the Orcish artifact set, but I can't approach the Haven outpost.