Affinity makes it cheaper and faster to cast as your board develops, and giving all your artifact creatures menace turns every attack into a nightmare to block
Perhaps there is a refined club of billionaires who exclusively play Magic as Richard Garfield intended - cards without set symbols, no sleeves, no card limits in deck construction - but other than that, this powerhouse is purely a collector's item
Theres no limit to how many times you can do that, so you can wipe out everyone in one quick turn if youve got enough mana
The higher you go, the less likely your opponents are to win via attacking, but I imagine theres a sweet spot around Bracket 2/3 where this really shines
Not far behind is trample, and Sword of Vengeance and Tenza, Godos Maul are both picks I think should see far more play especially now that we have more ways to make equip costs free than ever before
Print your cards Once you have added all the cards you want to your Proxy List, you can print them out and use them in your decks