mtg cards commander Magic the Gathering Coldsnap Rare Commandeer #29 at least 1 of which is Traditional Foil) Final Fantasy Commander Decks: Ardbert,

Ursula's Return - Sapphire and Steel Best cards: Philoctetes, No-Nonsense Instructor

As a broad rule of thumb, somewhere around 8-10 spot removal spells is a reasonable amount to play in your Commander deck

Green is a great color identity, so players don't have to be too picky when deciding on a background for him, and the deck's included background, Passionate Archaeologist, is probably the best choice

Showcase your favorite Magic: The Gathering Commander (EDH), Pokemon, Lorcana, Flesh and Blood, or standard size TCG deck with Showcase Deck Box

If the store is running an official Core Constructed event, you cannot use cards from Sets 1 to 4 unless that specific card has been reprinted in a newer, legal set

I dont think Days Undoing is actually busted or anything, but I think its actually going to see play (often out of sideboards, such as the Blue Devotion deck above)