The Top has 69,086 cards registered over at EDHREC.com, and since it's colorless, that's an 8% rate in every deck ever
If you are willing to pay for the service, Beckett has been an industry standard for trading card valuation (well beyond just MTG) for generations
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But Harpie's Feather Duster cannot harm monsters
Or you could try Sazhs Chocobo into Sidequest: Raise a Chocobo, play Prishes Wanderings or Summon: Fenrir as a reasonable turn three combat enhancer, and then drop turn four Summon: Fat Chocobo and flip your Sidequest for an almost unbeatable board lead