Mickey Mouse - Detective has a Sapphire ink classification and rather low stats with only one point for attack and three points for defense
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On turn four, with Nissa already rocking three loyalty, you get a free land or 3-drop creature if one is on top of your library, which youll likely know given the scrying you did last time
It can only get better from here
If she isn't your commander, you can play her in decks that lean into the counters theme, like those led by Atraxa, Praetors' VoiceAtraxa, Praetors' Voice or Tidus, Yuna's GuardianTidus, Yuna's Guardian
I really like the Witherbloom school cards from Strixhaven: School of Mages that play up this strategy, and you can find them in Scryfall by searching for wm:Witherbloom for watermark, Witherbloom