Illusion of victory.

If only an enemy hero appeared to intercept him (Mabrus doesn't count, portal to the city + two turns).

Well, it's like two turns out of four possible, until Mabrus and Alaric meet; they are running towards each other, at double speed, essentially. The only thing is that he then has to travel three more turns to reach the city, but that's not a big deal.

By the way, the idea of a super ability isn't bad, but it would be too overpowered. It gives a level, a Tome of Darkness, and something else. The main difficulty is that the orange hero takes over the mines, but this will be fixed soon.
Thank you for the positive feedback!