Mono-Black Control -- Dominaria Standard | Ali Aintrazi Creatures (15) 3 Gonti, Lord of Luxury 4 Dread Shade 4 Gifted Aetherborn 4 Walking Ballista Planeswalkers (4) 4 Karn, Scion of Urza Instants (8) 4 Fatal Push 4 Vraska's Contempt Sorceries (2) 1 Battle at the Bridge 1 Mastermind's Acquisition Enchantments (1) 1 Arguel's Blood Fast Artifacts (3) 3 Treasure Map Lands (27) 22 Swamp 1 Arch of Orazca 4 Cabal Stronghold Sideboard (15) 4 Duress 2 Torment of Hailfire 1 Moment of Craving 1 Battle at the Bridge 2 Doomfall 3 Phyrexian Scriptures 2 Golden Demise I was originally running 26 lands, but I ran into the issue of just missing land drops and I don't want to miss land drops with a Cabal Stronghold deck
Arcane Epiphany Arcane Epiphany is a 5-mana blue instant that draws three cards and gets a cost reduction down to 4 mana if you control a wizard
Most notably, Agony Warp can sometimes do a good impression of Lightning Helix, which should give an idea of how powerful it can be
Commander Familiars The Familiars from the original Commander Legends are quite potent for many Commander decks, but in particular Anara, Wolvid Familiars and Esior, Wardwing Familiars abilities will work nicely to protect a Background commander
Artists not getting their due credit is unfortunate too
Honorable Mention This one didn't crack the main list because its spread is narrower, mostly Dimir Reanimator and a few Jeskai variants in Standard