I'll be up for 2 more hours probably, but final thoughts since we're approaching the deadline, and this 24 rule seems more limiting that we thought...
I'd put Spiders in Xurus deck, with some Dragons. Spiders couldnt care less if they get rewound, and Discord alone can practically kill
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. I know its a gamble, but we obviously have to gamble somewhere. Putting only Dragons against
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is suicide IMO. Mastermind has to have either some Poison or Spiders or mix of everything.
Mixed damage is also good to have against gravity.
We didnt consider fractal deck against anyone yet - that could save us some creatures. Flying weapons too. But in two matches against darkness and against entropy, we HAVE TO go with low cost stuff.
Anyway, Mastermind definitely has to get a better deck, even though it might lower our chances elsewhere.