fish deck mtg commander GYSYSQSH Card Box for MTG, PU Leather Microfiber Lining Trading Card Storage Case Fits 100+ Sleeved Cards Strong Magnet Cover Holder for Magic TCG CCG, Cute Koi Fisher's Talent · Bloomburrow Commander

It is a very odd mana rock, because you are spending mana to get 1 less than you spent, but I think the threat here is that it then also becomes an 8/8 that makes opponents start sacrificing permanents, which seems pretty strong, especially since it is safe from creature-based removal until you turn it on

Staff of the Storytellers a modest $6, and Colossus Hammer + Blade of Selves are a few bucks as well

Because well be playing mostly webcam Magic for the near future, this deck might be a little awkward due to the copy effects

If you have a full party, creatures you control get +3/+0 until end of turn instead