| Clinquant SkymageThe List Tokens · FDN-33 | The List Tokens | FDN-33 | Uncommon | — |
| Cloak and DaggerMorningtide · 141 | Morningtide | 141 | Uncommon | €0.94 |
| Cloaked CadetInnistrad: Double Feature · 459 | Innistrad: Double Feature | 459 | Uncommon | €0.09 |
| Cloaked CadetInnistrad: Crimson Vow · 192 | Innistrad: Crimson Vow | 192 | Uncommon | €0.08 |
| Cloakwood HermitCommander Legends: Battle for Baldur's Gate · 221 | Commander Legends: Battle for Baldur's Gate | 221 | Uncommon | €0.21 |
| Cloakwood HermitCommander Legends: Battle for Baldur's Gate · 514 | Commander Legends: Battle for Baldur's Gate | 514 | Uncommon | €0.16 |
| Clock of DOOOOOOOOOOOOM!Unstable · 142 | Unstable | 142 | Uncommon | €0.06 |
| Clock of OmensFifth Dawn · 110 | Fifth Dawn | 110 | Uncommon | €3.46 |
| Clock of OmensMagic 2013 · 202 | Magic 2013 | 202 | Uncommon | $3.44 |
| Clock of OmensThe List Tokens · M13-202 | The List Tokens | M13-202 | Uncommon | €5.75 |
| Clockwork AvianRinascimento · 110 | Rinascimento | 110 | Uncommon | €1.15 |
| Clockwork AvianRenaissance · 122 | Renaissance | 122 | Uncommon | €0.22 |
| Clockwork AvianMasters Edition IV · 190 | Masters Edition IV | 190 | Uncommon | — |
| Clockwork BeastMasters Edition · 153 | Masters Edition | 153 | Uncommon | — |
| Clockwork DroidDoctor Who · 172 | Doctor Who | 172 | Uncommon | €0.14 |
| Clockwork DroidDoctor Who · 777 | Doctor Who | 777 | Uncommon | $1.43 |
| Clockwork GnomesMasters Edition IV · 191 | Masters Edition IV | 191 | Uncommon | — |
| Clockwork HydraDuel Decks: Elspeth vs. Tezzeret · 55 | Duel Decks: Elspeth vs. Tezzeret | 55 | Uncommon | €0.14 |
| Clockwork HydraJumpstart 2022 · 135 | Jumpstart 2022 | 135 | Uncommon | €0.22 |
| Clockwork HydraTime Spiral · 253 | Time Spiral | 253 | Uncommon | €0.10 |
| Clockwork HydraTime Spiral Remastered · 264 | Time Spiral Remastered | 264 | Uncommon | €0.12 |
| Clockwork ServantThrone of Eldraine · 216 | Throne of Eldraine | 216 | Uncommon | €0.04 |
| Clockwork SteedFifth Edition · 357 | Fifth Edition | 357 | Uncommon | €0.11 |
| Clockwork SteedMasters Edition II · 205 | Masters Edition II | 205 | Uncommon | — |
| Clockwork VorracMirrodin · 156 | Mirrodin | 156 | Uncommon | €0.07 |
| Cloistered Youth // Unholy FiendInnistrad · 8 | Innistrad | 8 | Uncommon | €0.06 |
| Cloister GargoyleAdventures in the Forgotten Realms · 7 | Adventures in the Forgotten Realms | 7 | Uncommon | €0.16 |
| Cloister GargoyleAdventures in the Forgotten Realms · 302 | Adventures in the Forgotten Realms | 302 | Uncommon | $0.20 |
| Cloister GargoyleThe List Tokens · AFR-302 | The List Tokens | AFR-302 | Uncommon | €0.08 |
| CloneUnlimited Edition · 52 | Unlimited Edition | 52 | Uncommon | €7.95 |
| CloneRevised Edition · 51 | Revised Edition | 51 | Uncommon | €0.64 |
| Clone30th Anniversary Edition · 51 | 30th Anniversary Edition | 51 | Uncommon | €3.42 |
| Clone30th Anniversary Edition · 348 | 30th Anniversary Edition | 348 | Uncommon | — |
| CloneCollectors' Edition · 52 | Collectors' Edition | 52 | Uncommon | €3.63 |
| CloneIntl. Collectors' Edition · 52 | Intl. Collectors' Edition | 52 | Uncommon | €6.05 |
| CloneForeign Black Border · 51 | Foreign Black Border | 51 | Uncommon | €1.07 |
| CloneLimited Edition Alpha · 51 | Limited Edition Alpha | 51 | Uncommon | €117.53 |
| CloneLimited Edition Beta · 52 | Limited Edition Beta | 52 | Uncommon | €29.27 |
| CloneSummer Magic / Edgar · 51 | Summer Magic / Edgar | 51 | Uncommon | $0.40 |
| CloneThe Zeta Set · 15 | The Zeta Set | 15 | Uncommon | — |
| CloneThe Zeta Set · 136 | The Zeta Set | 136 | Uncommon | — |
| CloneThe Zeta Set · 257 | The Zeta Set | 257 | Uncommon | — |
| Clone ShellDouble Masters · 241 | Double Masters | 241 | Uncommon | €0.15 |
| Clone ShellScars of Mirrodin · 143 | Scars of Mirrodin | 143 | Uncommon | $0.12 |
| Close EncounterEdge of Eternities · 176 | Edge of Eternities | 176 | Uncommon | €0.08 |
| Close QuartersMercadian Masques · 184 | Mercadian Masques | 184 | Uncommon | €0.24 |
| Closing StatementStrixhaven: School of Mages · 169 | Strixhaven: School of Mages | 169 | Uncommon | €0.04 |
| CloudblazerMasters 25 · 201 | Masters 25 | 201 | Uncommon | €0.20 |
| CloudblazerForgotten Realms Commander · 182 | Forgotten Realms Commander | 182 | Uncommon | €0.10 |
| CloudblazerBloomburrow Commander · 249 | Bloomburrow Commander | 249 | Uncommon | €0.05 |