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I want to share another interesting replay. Sinistar vs. Deirdra. Everything seems clear, and it's even on the Abyss map! But if you position your Deidra units correctly, and if your opponent casts an enhanced Rain spell without any luck and without Mana Flux, things can turn out differently. In my case, this happened, and I was playing as Sinistar. (If she had cast more powerful Sorrow spells with her dragons and managed them properly on the 2nd and 3rd turns...) The ending was still intense, but in my opinion, Deidra made more mistakes and could have won.
Regarding mirror matches:
I like Deidra vs. Deidra, Ravena vs. Ravena, and Karli vs. Karli the most (although morality might be an issue there). But in my opinion, a mirror match isn't a good way to determine which player is more skilled. Playing 3-4 random matchups is a much better way to quickly assess your opponent. And the pairings in mirror matches often turn out to be quite unpleasant, like: Jhalib vs. Jhalib, Ossir vs. Ossir, Sinistar vs. Sinistar, Shaq vs. Shaq, Garuna vs. Garuna. There are exceptions, like Deidra vs. Deidra.
Regarding Karli vs. Orson: yes, there are mistakes made by Karli, and Orson shouldn't cast Mass Curse.