14 cards where the card is tagged “cost-reducer-colored-mana”

A-Patrician Geist (Innistrad: Midnight Hunt #A-69)
Bard Class (Adventures in the Forgotten Realms #217)
Davriel, Soul Broker (Jumpstart: Historic Horizons #15)
Defiler of Dreams (Dominaria United #46)
Defiler of Faith (Dominaria United #16)
Defiler of Flesh (Dominaria United #90)
Defiler of Instinct (Dominaria United #119)
Defiler of Vigor (Dominaria United #160)
Edgewalker (Scourge #137)
Goblin Influx Array (Alchemy: Dominaria #13)
Morophon, the Boundless (Commander Masters #3)
Nekrataal Avatar (Magic Online Avatars #58)
Ragemonger (Born of the Gods #153)
Vorthos, Steward of Myth (Unfinity #126)

This search is finished. Now the real work can begin.