55 cards where the text includes “domain” and it’s legal in Vintage

Allied Strategies (Duel Decks: Phyrexia vs. the Coalition #63)
Artillery Blast (Dominaria United #6)
Aven Trailblazer (Conflux #4)
Bortuk Bonerattle (Dominaria United #197)
Briar Hydra (Dominaria United #286)
Collapsing Borders (Invasion #141)
Collective Restraint (Invasion #49)
Draco (Planeshift #131)
Drag Down (Modern Masters #80)
Drag to the Bottom (Dominaria United #91)
Evasive Action (Duel Decks: Phyrexia vs. the Coalition #50)
Exotic Curse (Duel Decks: Phyrexia vs. the Coalition #56)
Exotic Disease (Planeshift #43)
Exploding Borders (Conflux #106)
Gaea's Might (Dominaria United #164)
Herd Migration (Dominaria United #165)
Jodah's Codex (Dominaria United #233)
Kavu Scout (Invasion #151)
Leyline Binding (Dominaria United #24)
Llanowar Greenwidow (Dominaria United #169)
Magnigoth Treefolk (Planeshift #82)
Manaforce Mace (Conflux #139)
Matca Rioters (Modern Masters 2015 #148)
Meria's Outrider (Dominaria United #138)
Might of Alara (Conflux #85)
Nael, Avizoa Aeronaut (Dominaria United #207)
Nishoba Brawler (Dominaria United #174)
Ordered Migration (Invasion #258)
Planar Despair (Apocalypse #50)
Power Armor (Duel Decks: Phyrexia vs. the Coalition #62)
Prismatic Geoscope (Commander 2016 #55)
Radha, Coalition Warlord (Dominaria United #211)
Radha's Firebrand (Dominaria United #141)
Samite Pilgrim (Planeshift #15)
Scion of Draco (Modern Horizons 2 #234)
Shadow Prophecy (Dominaria United #105)
Slimefoot's Survey (Dominaria United #178)
Sphinx of Clear Skies (Dominaria United #67)
Spore Burst (Conflux #93)
Stratadon (Planeshift #135)
Strength of Unity (Invasion #40)
Sunbathing Rootwalla (Dominaria United #181)
Territorial Kavu (Modern Horizons 2 #216)
Territorial Maro (Dominaria United #184)
The Weatherseed Treaty (Dominaria United #188)
Tribal Flames (Modern Masters 2015 #132)
Tromp the Domains (Time Spiral Remastered #242)
Voda Sea Scavenger (Dominaria United #74)
Voices from the Void (Conflux #55)
Wandering Goblins (Conflux #76)
Wandering Stream (Invasion #224)
Wayfaring Giant (Invasion #44)
Worldly Counsel (Conflux #39)
Yavimaya Sojourner (Dominaria United #191)
Zar Ojanen, Scion of Efrava (Dominaria United #227)

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