The strongest hero.

Omnipotent (not for dragons), if not omniscient, but to claim that Railag is stronger than the Overlord... Ha, Railag only survived thanks to his friends and the fact that the Overlord cannot leave his prison.
Railag, the shaper of Ashan's destiny? What has he done for him that could have changed his fate? He couldn't influence the birth of the Messiah. So, he hasn't done anything significant. Except for killing Nicholas.

As I mentioned in my first post, the Overlord seems to be the strongest; he is, to put it more correctly, "a class above" the others.
But it's not always the case that the strong defeat the weak; very often, the opposite happens, and there are many examples of this in life and in the game.
And it's not clear by what criteria to determine who is stronger: a one-on-one fight? commanding an army? maybe someone can out-magic someone else? under what conditions will the duel take place?
And Railag is indeed one of the shapers of Ashan's destiny. In addition to killing Nicholas, this can also include the unification of Igg-Shail and the defeat of the demon worshipers there, and thus the participation of all warlocks in the alliance at the end of the original campaign. Furthermore, Railag is the heir of Tieru and the only Dragon Knight (as far as I understand), thus he inherited the thousand-year history, powers, and knowledge of this order, which already makes him one of the main shapers of Ashan's destiny