From picking your commander to choosing the final cut, everything in the process is centered around the identity of the deck and its pilot
Gyruda, Doom of Depths Gyruda, Doom of Depths may be the companion Ive tried to make work the most

Agatha's Soul Cauldron Agent of Erebos All Hallow's Eve Angel of Finality Angel of Glory's Rise Animate Graveyard Ascend from Avernus Bag of Holding Balthor the Defiled Barishi Bazaar of Wonders Bojuka Bog Burn Away Cabal Therapy Calix, Destiny's Hand Cease // Desist Counterbore Cranial Extraction Creeping Renaissance Crook of Condemnation Crypt Incursion Day's Undoing Deadly Cover-Up Death or Glory Descend upon the Sinful Doomsday Drudge Spell Duplicity Dusk // Dawn Elixir Endurance Epic Experiment Eradicate Extirpate Free-for-All Gamekeeper Gerrard's Hourglass Pendant Gerrard, Weatherlight Hero Ghastly Conscription Go Blank Gustha's Scepter Haunting Echoes Haunting Voyage Hazel's Brewmaster Hedonist's Trove Helvault Identity Crisis Idol of Endurance Ill-Gotten Gains Into the Earthen Maw Inverter of Truth Jund Charm Kaya's Guile Knowledge Vault Lantern of the Lost Legion's End Lobotomy Mairsil, the Pretender Metallurgic Summonings Moratorium Stone Myr Welder Necrogoyf Necromancer's Covenant Nicol Bolas, the Arisen Nihil Spellbomb Orzhova Paradigm Shift Patchwork Crawler Praetor's Counsel Purgatory

Blue and green had flips that their opponent had no control over
They had tricks for getting around the discarding-your-hand downside
That includes itself, so while opponents might block the Company Commander to prevent the effect from being reused, theyll lose at least one creature off the bargain