| Circle of Protection: WhiteSeventh Edition · 10★ | Seventh Edition | 10★ | Common | $0.21 |
| Circle of Protection: WhiteCollectors' Edition · 14 | Collectors' Edition | 14 | Common | €1.63 |
| Circle of Protection: WhiteIntl. Collectors' Edition · 14 | Intl. Collectors' Edition | 14 | Common | €0.47 |
| Circle of Protection: WhiteForeign Black Border · 13 | Foreign Black Border | 13 | Common | €0.10 |
| Circle of Protection: WhiteIce Age · 16 | Ice Age | 16 | Common | €0.11 |
| Circle of Protection: WhiteLimited Edition Alpha · 13 | Limited Edition Alpha | 13 | Common | €16.07 |
| Circle of Protection: WhiteLimited Edition Beta · 14 | Limited Edition Beta | 14 | Common | €4.34 |
| Circle of Protection: WhiteSummer Magic / Edgar · 13 | Summer Magic / Edgar | 13 | Common | €341.53 |
| Circle of Protection: WhiteTempest · 13 | Tempest | 13 | Common | €0.08 |
| Circle of the Land DruidCommander Legends: Battle for Baldur's Gate · 220 | Commander Legends: Battle for Baldur's Gate | 220 | Common | $0.27 |
| Circle of the Land DruidAlchemy Horizons: Baldur's Gate · 203 | Alchemy Horizons: Baldur's Gate | 203 | Common | — |
| Circle of the Moon DruidAdventures in the Forgotten Realms · 177 | Adventures in the Forgotten Realms | 177 | Common | €0.05 |
| Circle of the Moon DruidAlchemy Horizons: Baldur's Gate · 204 | Alchemy Horizons: Baldur's Gate | 204 | Common | — |
| Circuits ActUnfinity · 103 | Unfinity | 103 | Common | €0.13 |
| Circuits ActUnfinity · 389 | Unfinity | 389 | Common | €3.21 |
| Circular LogicVintage Masters · 60 | Vintage Masters | 60 | Common | — |
| Circus of the SunBlack Lotus Unknown Planechase · PLA026 | Black Lotus Unknown Planechase | PLA026 | Common | — |
| Cirith Ungol PatrolThe Lord of the Rings: Tales of Middle-earth · 80 | The Lord of the Rings: Tales of Middle-earth | 80 | Common | €0.06 |
| Cirith Ungol PatrolThe Lord of the Rings: Tales of Middle-earth · 531 | The Lord of the Rings: Tales of Middle-earth | 531 | Common | €0.25 |
| Citadel GateCommander Legends: Battle for Baldur's Gate · 349 | Commander Legends: Battle for Baldur's Gate | 349 | Common | $1.76 |
| Citadel GateThe List Tokens · CLB-349 | The List Tokens | CLB-349 | Common | $1.79 |
| Citanul DruidMasters Edition IV · 146 | Masters Edition IV | 146 | Common | — |
| Citanul StalwartThe Brothers' War · 175 | The Brothers' War | 175 | Common | €0.09 |
| Citanul WoodreadersDuel Decks: Nissa vs. Ob Nixilis Tokens · 4 | Duel Decks: Nissa vs. Ob Nixilis Tokens | 4 | Common | $0.05 |
| Citanul WoodreadersModern Masters · 140 | Modern Masters | 140 | Common | €0.03 |
| Citanul WoodreadersPlanar Chaos · 125 | Planar Chaos | 125 | Common | $0.12 |
| Citanul WoodreadersThe List Tokens · DDR-4 | The List Tokens | DDR-4 | Common | €0.07 |
| Citanul WoodreadersTime Spiral Remastered · 199 | Time Spiral Remastered | 199 | Common | €0.09 |
| Citizen's ArrestDominaria United · 11 | Dominaria United | 11 | Common | €0.04 |
| City HallBlack Lotus Unknown Planechase · PLA004 | Black Lotus Unknown Planechase | PLA004 | Common | — |
| City HallBlack Lotus Unknown Planechase · PLA004a | Black Lotus Unknown Planechase | PLA004a | Common | — |
| City of the DaleksDoctor Who · 575 | Doctor Who | 575 | Common | €0.20 |
| City PigeonMarvel Super Heroes Commander · 769 | Marvel Super Heroes Commander | 769 | Common | €0.08 |
| City PigeonMarvel's Spider-Man · 4 | Marvel's Spider-Man | 4 | Common | €0.06 |
| City PigeonThrough the Omenpaths · 5 | Through the Omenpaths | 5 | Common | — |
| Civic GardenerStreets of New Capenna · 140 | Streets of New Capenna | 140 | Common | €0.06 |
| Civic GuildmageMirage · 7 | Mirage | 7 | Common | €0.08 |
| Civic StalwartRavnica Allegiance · 6 | Ravnica Allegiance | 6 | Common | $0.05 |
| Civic WayfinderTenth Edition · 255 | Tenth Edition | 255 | Common | €0.02 |
| Civic WayfinderDuel Decks: Nissa vs. Ob Nixilis Tokens · 5 | Duel Decks: Nissa vs. Ob Nixilis Tokens | 5 | Common | €0.03 |
| Civic WayfinderDuels of the Planeswalkers · 56 | Duels of the Planeswalkers | 56 | Common | $0.08 |
| Civic WayfinderEternal Masters · 161 | Eternal Masters | 161 | Common | €0.07 |
| Civic WayfinderSalvat 2011 · 126 | Salvat 2011 | 126 | Common | €0.05 |
| Civic WayfinderRavnica: City of Guilds · 157 | Ravnica: City of Guilds | 157 | Common | €0.05 |
| Civic WayfinderMagic Online Theme Decks · A64 | Magic Online Theme Decks | A64 | Common | — |
| Civil ServantStreets of New Capenna · 176 | Streets of New Capenna | 176 | Common | €0.03 |
| Claim of ErebosBorn of the Gods · 64 | Born of the Gods | 64 | Common | $0.04 |
| Claim the PreciousThe Lord of the Rings: Tales of Middle-earth · 81 | The Lord of the Rings: Tales of Middle-earth | 81 | Common | €0.12 |
| Claim the PreciousThe Lord of the Rings: Tales of Middle-earth · 532 | The Lord of the Rings: Tales of Middle-earth | 532 | Common | €1.20 |
| ClairvoyanceIce Age · 63 | Ice Age | 63 | Common | €0.12 |