This is actually surprisingly easy if you employ a few type-changing tricks again
13.3 If the Seller sells a Lot that was unsold at the Sale: (a) within 90 days after the Sale to a person who was registered to bid at the Sale
The first cards the mechanic appeared on were Frodo, Sauron's Bane, Samwise the Stouthearted, and Gollum, Patient Plotter
+1/+1 counter archetypes are extremely popular in these colors, and both Wave Goodbye and Tributary Instructor should be immediate inclusions for the majority of those decks
Between this and the fact that blacks best mana ramp spells only tend to thrive in specific niches of the Commander format, such as cEDH, mono and two color black decks, combo decks, and/or builds with reliable access to Urborg, Tomb of Yawgmoth, theres really no way to rank these cards
Creatures (29) 4 Robber of the Rich 4 Bonecrusher Giant 4 Torbran, Thane of Red Fell 4 Rimrock Knight 4 Anax, Hardened in the Forge 2 Phoenix of Ash 3 Magda, Brazen Outlaw 4 Goldspan Dragon Lands (22) Spells (9) One last note on Magda: in more powerful formats, like Historic, remember that Toolcraft Exemplar is a Dwarf Second on our list could easily be number one if all you care about is likelihood of getting banned, since this one is most certainly getting banned and soon