ultra pro mtg card sleeves March of the Machine Gimbal, Gremlin Prodigy Standard Deck Protector (100ct) for Magic: The Gathering and the gloss clear front allows your foil cards to shine Ultra PRO: 105ct Standard Sleeves

If you were to have a land type count as that color instead, you would allow Mtenda Lions and such, but disallow many more things

Standard Battle 6 Players 1st 1x 2x 4x 4x 4x 3x 4x 3x 4x 4x 4x 4x 2x 4x 4x Deck Stats On Curve Plays Counter Stats Avg: 1.14k / card 2k: 4 1k: 25 3k Event: 8 Searcher Hit Chance 99.0% Trigger 5k+ Bodies Bodies in Life 4 0% 3 0% 2 1.4% 1 21.1% 0 77.4% Cost Curve Power Curve Types Baroque Works: 22 Former Baroque Works: 12 Straw Hat Crew: 12 Cross Guild: 8 Animal: 4 Impel Down: 4 Water Seven: 4 Navy: 4 Attributes Keyword Stats Trigger 25 On Play 19 Main 8 DON

Each of these cards does exactly what its intended to do stop a specific type of landwalk creature

What gets at the heart of Commander

Well that probably says even more than I just did