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You capture Apel-Sin, and throughout the game, you buy Twilight Dragons there instead of your Dryads – that’s all it takes)
And the unbought Dryads or Dancers, of which there will be several hundred, can be very effectively given to Talanar to crush the secondary Necromancers with them.
I don’t know, I think such a large-scale strategy requires a bit of money, and the resource problem hasn’t been canceled:)