31 cards where the text includes “proliferate” and the color identity ≤ G and (the card is available on Paper)

Adaptive Sporesinger (Phyrexia: All Will Be One #157)
Bloated Contaminator (Phyrexia: All Will Be One #159)
Bloom Hulk (War of the Spark #154)
Cankerbloom (Phyrexia: All Will Be One #161)
Carnival Elephant Meteor (Unfinity Sticker Sheets #7)
Carnivorous Canopy (Phyrexia: All Will Be One #162)
Contagion Clasp (Scars of Mirrodin #144)
Contagion Engine (Scars of Mirrodin #145)
Contagious Vorrac (Phyrexia: All Will Be One #164)
Contaminant Grafter (Phyrexia: All Will Be One Commander #17)
Copper Longlegs (Phyrexia: All Will Be One #165)
Core Prowler (Mirrodin Besieged #103)
Courage in Crisis (Commander Masters #278)
Everythingamajig (Unstable #147a)
Evolution Sage (The Lost Caverns of Ixalan Commander #240)
Expand the Sphere (Phyrexia: All Will Be One #168)
Glistening Sphere (Phyrexia: All Will Be One Commander #20)
Karn's Bastion (The Lost Caverns of Ixalan Commander #339)
Park Heights Maverick (New Capenna Commander #63)
Plaguemaw Beast (Mirrodin Besieged #87)
Planewide Celebration (War of the Spark #172)
Pollenbright Druid (Commander Masters #312)
Recon Craft Theta (Fallout #141)
Smell Fear (Modern Horizons 2 #173)
Staff of Compleation (Phyrexia: All Will Be One #242)
Sword of Truth and Justice (Modern Horizons #229)
Thirsting Roots (Phyrexia: All Will Be One #185)
Throne of Geth (Double Masters #301)
Unnatural Restoration (Phyrexia: All Will Be One #191)
Urban Daggertooth (Modern Horizons 2 #181)
Venomous Brutalizer (Phyrexia: All Will Be One #193)

It is the moment of discovery, the triumph of the mind, and the end of these results.