27 cards where the cards aren’t reprints and the mana cost is greater than or equal to {1}{R/W}

Zirda, the Dawnwaker (Ikoria: Lair of Behemoths #233)
Legion Leadership // Legion Stronghold (Modern Horizons 3 #255)
Legion Leadership // Legion Stronghold (Modern Horizons 3 #255)
Master Warcraft (Ravnica: City of Guilds #250)
Balefire Liege (Eventide #132)
Duergar Hedge-Mage (Eventide #137)
Waves of Aggression (Eventide #148)
Spitemare (Eventide #147)
Ezio, Brash Novice (Assassin's Creed #55)
Double Cleave (Eventide #135)
Nahiri, Storm of Stone (War of the Spark #233)
Shattering Blow (Gatecrash #225)
Veteran Guardmouse (Bloomburrow #237)
Scourge of the Nobilis (Eventide #146)
Returned Pastcaller (Strixhaven: School of Mages #224)
Boros Strike-Captain (Ravnica: Clue Edition #25)
Moonhold (Eventide #143)
Duergar Mine-Captain (Eventide #138)
Marisi's Twinclaws (Alara Reborn #140)
Fresh-Faced Recruit (Guilds of Ravnica #216)
Arrows of Justice (Gatecrash #211)
Battlegate Mimic (Eventide #133)
Spirit Summoning (Strixhaven: School of Mages #236)
Lorehold Pledgemage (Strixhaven: School of Mages #201)
Fuss // Bother (Murders at Karlov Manor #248)
Ordruun Mentor (Ravnica: Clue Edition #39)
Belligerent Hatchling (Eventide #134)
Hobgoblin Dragoon (Eventide #142)

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