Control and removal-focused midrange decks are tough since they can usually kill our Arcades, the Strategist and Wingmantle Chaplain and leave us with a bunch of do-nothing Walls
The problem is that Un-sets tend to rely heavily on inside jokes and references to old cards that many new players probably won't understand
The Black Mage essentially gets a tweaked version of a core Vivi ability: he deals one damage to each opponent whenever you cast a noncreature spell, or three damage with a full party
The artifact also has an activated ability that lets you pay two generic mana, tap it, and collect evidence 3 to force opponents to either discard a card, sacrifice a creature, or lose three life
Meanwhile, Frodo, Adventurous Hobbit and Sam, Loyal Attendant as partner commanders emphasize Food token generation and lifegain, being a powerful strategy that can outlast opponents
To this end, Squall, SeeD Mercenary is my pick for Best as a Commander