mtg scheme card sleeves Oversize 3.6 inch x 5.1 inch (91 mm x 130 mm), Fit for Plane Chase Cards, Dr. Who Commander Deck, Large Card Sleeves : Toys & Games Sleeves fit cards 88 x 63 mm (standard TCG card size). CARD SLEEVES Archives - Gamegenic

Black Stitched Playmat (BS)

Its a fine payoff/enabler for +1/+1 counter decks, but it costs about 2 mana too much to be exciting as a commander and ultimately just feels like an overcosted Kutzil, Malamet Exemplar

Utility Lands Pendelhaven Pendelhaven is an easy freeroll in the deck, and well worth the slot

As I started going through more options, though, I realized that "essentials" here could mean things like Dockside Extortionist, Purphoros, God of Forge

Update: Thanks to some feedback, I've added some new challenging modes to the bottom of this article

2 Sapphire Steel Kiwi Bird Strategically Stronger In this deck, there is a wide array of Sapphire and Steel cards that work perfectly together to create a deck that can be strategically tricky to deal with