33 cards where the cards aren’t reprints and the mana cost is greater than or equal to {1}{W}{B}{G}

Atraxa, Grand Unifier (Phyrexia: All Will Be One #196)
The Ur-Dragon (Commander 2017 #48)
Thalia and The Gitrog Monster (March of the Machine #255)
Tiamat (Adventures in the Forgotten Realms #235)
Ixhel, Scion of Atraxa (Phyrexia: All Will Be One Commander #1)
Two-Headed Hellkite (Dominaria United Commander #14)
The Kami War // O-Kagachi Made Manifest (Kamigawa: Neon Dynasty #227)
The Kami War // O-Kagachi Made Manifest (Kamigawa: Neon Dynasty #227)
Vishgraz, the Doomhive (Phyrexia: All Will Be One Commander #4)
Anikthea, Hand of Erebos (Commander Masters #705)
Nethroi, Apex of Death (Ikoria: Lair of Behemoths #197)
Duneblast (Khans of Tarkir #174)
The Necrobloom (Modern Horizons 3 #194)
Teneb, the Harvester (Planar Chaos #163)
Conflux (Conflux #102)
Unite the Coalition (Dominaria United Commander #15)
Narci, Fable Singer (Commander Masters #710)
O-Kagachi, Vengeful Kami (Commander 2017 #45)
Myrkul, Lord of Bones (Commander Legends: Battle for Baldur's Gate #287)
Ghave, Guru of Spores (Commander 2011 #200)
Primeval Spawn (Dominaria United Commander #13)
Karador, Ghost Chieftain (Commander 2011 #207)
Tayam, Luminous Enigma (Commander 2020 #16)
Colfenor, the Last Yew (Commander Legends #274)
Kathril, Aspect Warper (Commander 2020 #10)
Karona, False God (Scourge #138)
Siege Rhino (Khans of Tarkir #200)
Ivorytusk Fortress (Khans of Tarkir #179)
Meeting of the Five (Streets of New Capenna #202)
Armament Corps (Khans of Tarkir #165)
Abzan Guide (Khans of Tarkir #162)
Coalition Victory (Invasion #241)
Drover of the Swine (Alchemy: Wilds of Eldraine #17)
Who // What // When // Where // Why (Unhinged #120)

Though this query has ended, its relics still slumber in New Argive.