Which combined artifact is the best?

But Armageddon (there is such a thing :D) helps a little ;)

With large armies, the effectiveness of Armageddon approaches zero! Besides, resistance saves the day :-)
With small armies, you are right!

Yeah... or, for example, Implosion with Chain Lightning :D

Well, even Implosion and Might of the Dragon Father won't save you! :-)