mtg are commander cards legal in standard Magic Arena Exclusive (Legal MTGA standard) : r/magicTCG Top Ten Standard Legal Commanders

Here are a few options: Leave the physical card outside the game and use a labeled substitute card for while the card must remain hidden in your library or face down Sleeve your deck with fully opaque backs like Dragon Shield Matte sleeves

Removed CG09 Nerf Herder

Kaheera, the Orphanguard Kalonian Behemoth Kethek, Crucible Goliath Kezzerdrix Kona, Rescue Beastie Krakilin Krosan Beast Krosan Cloudscraper Krosan Colossus Laccolith Titan Lightning Reaver Loot, Exuberant Explorer Lovestruck Beast Lumbering Battlement

Note that the Art team played into having a variety of different kinds of dogs, many on the cuter side

At first glance, Common Cause looks like a playable card