A strange side quest. I didn't have anything like that; I only had the option to attack the mage in the dungeon and close the portal. It seems something broke in the script, and nothing was triggered.
The mages didn't leave the castle at all after the orc appeared, and then the orc took over the mages' eastern-southern castle and stayed there for the entire game. Somewhere around the 3-month mark, everything just stopped.
Сценарии:
"Холм мертвецов"
"Священное древо"