- Which faction is stronger? (Necropolis, Tower, or Conflux)

Let's not forget that Armageddon doesn't always appear for the Elves! But raising the dead and wave of death happen in 90% of cases for the Necropolis!

Wave of death isn't such a powerful spell that can shift the balance in favor of the Necropolis.
And Armageddon... well, it depends on luck, but if there are more than one castle, etc., the chances increase significantly.