38 cards where the cards aren’t reprints and the mana cost is greater than or equal to {2}{R}{G}{W}

Zacama, Primal Calamity (Rivals of Ixalan #174)
Gishath, Sun's Avatar (Ixalan #222)
The Ur-Dragon (Commander 2017 #48)
Pantlaza, Sun-Favored (The Lost Caverns of Ixalan Commander #4)
Tiamat (Adventures in the Forgotten Realms #235)
Rith, Liberated Primeval (Dominaria United #214)
Rienne, Angel of Rebirth (Core Set 2020 #281)
Voja, Jaws of the Conclave (Murders at Karlov Manor #432)
Conflux (Conflux #102)
Unite the Coalition (Dominaria United Commander #15)
Phabine, Boss's Confidant (New Capenna Commander #9)
Primeval Spawn (Dominaria United Commander #13)
Ghired, Conclave Exile (Commander 2019 #42)
Gahiji, Honored One (Commander 2013 #191)
Yuma, Proud Protector (Outlaws of Thunder Junction Commander #4)
Havi, the All-Father (Assassin's Creed #56)
Duskana, the Rage Mother (Murders at Karlov Manor Commander #5)
Uril, the Miststalker (Alara Reborn #124)
Eivor, Wolf-Kissed (Assassin's Creed #54)
Rith, the Awakener (Invasion #267)
Godsire (Shards of Alara #170)
Cabaretti Confluence (New Capenna Commander #69)
Preston Garvey, Minuteman (Fallout #8)
Ultra Magnus, Tactician // Ultra Magnus, Armored Carrier (Transformers #15)
Ultra Magnus, Tactician // Ultra Magnus, Armored Carrier (Transformers #15)
Palladia-Mors, the Ruiner (Core Set 2019 #219)
Annie Flash, the Veteran (Outlaws of Thunder Junction #190)
Meeting of the Five (Streets of New Capenna #202)
Rakish Revelers (Streets of New Capenna #214)
Meglonoth (Conflux #118)
Realm Razer (Shards of Alara #187)
Hazezon Tamar (Legends #230)
Palladia-Mors (Legends #247)
Rakeclaw Gargantuan (Shards of Alara #186)
Johan (Legends #236)
Naya Sojourners (Alara Reborn #122)
A-Rakish Revelers (Streets of New Capenna #A-214)
Coalition Victory (Invasion #241)
Who // What // When // Where // Why (Unhinged #120)

The message was clear to Sorin—time to search for something else.