| 2 | River Kelpie FOIL | MTGShadowmoor_049F |
| 4+ | River Merfolk | MTGFEM_024 |
| 4+ | River of Tears | MTGMKC_283 |
| 1 | River of Tears | MTGIconicMasters_246 |
| 1 | River of Tears (Retro Frame) | MTGBRC_197 |
| 4+ | River Serpent | MTGAmonkhet_066 |
| 1 | River Serpent | MTGMysteryBooster_0473 |
| 4+ | River Song | MTGWHO_152 |
| 3 | River Song's Diary | MTGWHO_182 |
| 4+ | River's Grasp | MTGShadowmoor_174 |
| 3 | River's Rebuke | MTGIxalan_071 |
| 4+ | River's Rebuke | MTGGameNight2019_024 |
| 1 | River's Rebuke | MTGNCC_231 |
| 4+ | Riverfall Mimic | MTGEventide_111 |
| 3 | Riverfall Mimic FOIL | MTGEventide_111F |
| 4+ | Riverwheel Aerialists | MTGKhansofTarkir_051 |
| 1 | Riverwheel Aerialists (FOIL) | MTGKhansofTarkir_051F |
| 1 | Riverwheel Aerialists (FOIL) | MTGIconicMasters_071F |
| 2 | Riverwise Augur | MTGRivals of Ixalan_048 |
| 4+ | Riverwise Augur | MTGAFC_093 |
| 1 | Riveteers Initiate (Foil) | MTGSNC_120F |
| 4+ | Rix Maadi Guildmage | MTGReturntoRavnica_192 |
| 4+ | Rix Maadi Reveler | MTGRavnica Allegiance_109 |
| 4+ | Rix Maadi, Dungeon Palace | MTGDissension_179 |
| 4+ | Rix Maadi, Dungeon Palace | MTGCommander2019_269 |
| 1 | Road // Ruin | MTGMH2_212 |
| 3 | Road of Return | MTGCommander2019_034 |
| 4+ | Roadside Reliquary | MTGNEO_272 |
| 4+ | Roalesk, Apex Hybrid | MTGWar of the Spark_213 |
| 1 | Roalesk, Apex Hybrid (FOIL) | MTGWar of the Spark_213F |
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