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The Commander card is usually the backbone of a deck and the one who dictates the decks central mechanics , but that is precisely why removing it every turn is so bad
You choose an artifact or creature card from it, then choose an artifact or creature card from their graveyard

Abdel Adrian, Gorion's Ward Achilles Davenport Acolyte of Bahamut Agent of the Iron Throne Agent of the Shadow Thieves Ainok Strike Leader Akroma's Will Akroma's Will Alora, Merry Thief Amber Gristle O'Maul Aminatou, the Fateshifter Ancestral Communion Angelic Field Marshal Archivist of Gondor Astarion's Thirst Baeloth Barrityl, Entertainer Bane's Contingency Bastion Protector Benalish Commander Biowaste Blob Bloodsworn Steward Brotherhood Ambushers Burakos, Party Leader Candlekeep Sage Captain Vargus Wrath Chain Assassination Clan Crafter Clara Oswald Cloakwood Hermit Cloudkill Command Beacon Command Beacon Commander Greven il-Vec Commander Sofia Daguerre Commander's Insight Commander's Insignia Commander's Plate Commodore Guff Company Commander Convergence of Dominion Criminal Past Crimson Honor Guard Cultist of the Absolute Daretti, Scrap Savant Deadly Rollick Deflecting Swat Demon of Wailing Agonies Dihada, Binder of Wills Distract the Guards Dragon Cultist Drillworks Mole Drown in Dreams Dungeon Delver Durnan of the Yawning Portal Eagle Vision Echo Storm Ellyn Harbreeze, Busybody Elminster Empyrial Storm Endless Ranks of HYDRA Erinis, Gloom Stalker Escape Detection Estrid, the Masked Everett K

Arceus is not only a rare and expensive card, but it's also incredibly powerful
Fortunately, Commander players love that stuff, so The Capitoline Triad could easily see play in the format