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With good luck, you don't notice difficulty 200, but if luck isn't on your side, oh boy!
we played online without any restrictions; no one played Necromancer simply because of that, so they weren't nerfed, and when the number of DDs is not limited to one per turn, the tactic where every little Necromancer in their own corner with 1 Angel farms skeletons can backfire because they get picked off one by one before you pass them to the main hero—resulting in the issue of coming with 4k skeletons and wanting to hang yourself; I haven't encountered that
4 DDs is certainly good! But you still have to get the DD! And what guarantee is there that the Necromancer won't get it earlier by opening a Dragon Utopia on week two?
P.S. as for the development scheme, of course I'll have to reconsider; I looked at the saves, much is unclear, but the general algorithm is clear, I'll figure it out