| ClaustrophobiaGame Night · 20 | Game Night | 20 | Common | €0.07 |
| ClaustrophobiaIconic Masters · 45 | Iconic Masters | 45 | Common | €0.03 |
| ClaustrophobiaInnistrad · 48 | Innistrad | 48 | Common | €0.05 |
| ClaustrophobiaMagic 2014 · 46 | Magic 2014 | 46 | Common | €0.04 |
| ClaustrophobiaMagic Origins · 50 | Magic Origins | 50 | Common | €0.04 |
| ClaustrophobiaThe List Tokens · DDT-3 | The List Tokens | DDT-3 | Common | €0.08 |
| Clavileño, First of the BlessedThe Lost Caverns of Ixalan Commander · 2 | The Lost Caverns of Ixalan Commander | 2 | Mythic Rare | $0.46 |
| Clavileño, First of the BlessedThe Lost Caverns of Ixalan Commander · 18 | The Lost Caverns of Ixalan Commander | 18 | Mythic Rare | €4.33 |
| Clavileño, First of the BlessedThe Lost Caverns of Ixalan Commander · 27 | The Lost Caverns of Ixalan Commander | 27 | Mythic Rare | $1.45 |
| Clavileño, First of the BlessedThe Lost Caverns of Ixalan Commander · 122 | The Lost Caverns of Ixalan Commander | 122 | Mythic Rare | €0.16 |
| Clavileño, First of the Blessed // Clavileño, First of the BlessedThe Lost Caverns of Ixalan Art Series · 70 | The Lost Caverns of Ixalan Art Series | 70 | — | — |
| Clavileño, First of the Blessed // Clavileño, First of the BlessedThe Lost Caverns of Ixalan Art Series · 73 | The Lost Caverns of Ixalan Art Series | 73 | — | — |
| Clawing TormentKamigawa: Neon Dynasty · 91 | Kamigawa: Neon Dynasty | 91 | Common | €0.10 |
| Clawing Torment // Clawing TormentNeon Dynasty Art Series · 32 | Neon Dynasty Art Series | 32 | — | — |
| Claws of GixTime Spiral Timeshifted · 107 | Time Spiral Timeshifted | 107 | Special | €3.65 |
| Claws of GixUrza's Saga · 290 | Urza's Saga | 290 | Uncommon | €7.83 |
| Claws of GixThe List Tokens · USG-290 | The List Tokens | USG-290 | Uncommon | — |
| Claws of ValakutDuel Decks: Knights vs. Dragons · 72 | Duel Decks: Knights vs. Dragons | 72 | Common | €0.21 |
| Claws of ValakutWorldwake · 75 | Worldwake | 75 | Common | $0.20 |
| Claws of WirewoodScourge · 114 | Scourge | 114 | Uncommon | $0.14 |
| Claws of WirewoodVintage Masters · 201 | Vintage Masters | 201 | Common | — |
| Claws OutFoundations · 6 | Foundations | 6 | Uncommon | €0.16 |
| Clay ChampionThe Brothers' War · 230 | The Brothers' War | 230 | Mythic Rare | €0.29 |
| Clay ChampionThe Brothers' War · 362 | The Brothers' War | 362 | Mythic Rare | $0.51 |
| Clay ChampionThe Brothers' War Promos Tokens · 230p | The Brothers' War Promos Tokens | 230p | Mythic Rare | $0.49 |
| Clay ChampionThe Brothers' War Promos Tokens · 230s | The Brothers' War Promos Tokens | 230s | Mythic Rare | $0.69 |
| Clay ChampionMagic Online Promos · 105798 | Magic Online Promos | 105798 | Mythic Rare | — |
| Clay-Fired Bricks // Cosmium KilnThe Lost Caverns of Ixalan · 6 | The Lost Caverns of Ixalan | 6 | Uncommon | €0.08 |
| Clay GolemForgotten Realms Commander · 58 | Forgotten Realms Commander | 58 | Uncommon | €0.25 |
| Clay PigeonUnglued · 73 | Unglued | 73 | Uncommon | €0.41 |
| Clay RevenantThe Brothers' War · 118 | The Brothers' War | 118 | Common | €0.06 |
| Clay StatueFourth Edition Foreign Black Border · 305 | Fourth Edition Foreign Black Border | 305 | Common | €0.16 |
| Clay StatueFourth Edition · 305 | Fourth Edition | 305 | Common | $0.11 |
| Clay StatueFifth Edition · 355 | Fifth Edition | 355 | Common | €0.08 |
| Clay StatueAntiquities · 44 | Antiquities | 44 | Common | €0.61 |
| Clay StatueRinascimento · 109 | Rinascimento | 109 | Common | €0.19 |
| Clay StatueRenaissance · 120 | Renaissance | 120 | Common | €0.07 |
| Clay StatueMasters Edition IV · 189 | Masters Edition IV | 189 | Uncommon | — |
| CleanfallChampions of Kamigawa · 6 | Champions of Kamigawa | 6 | Uncommon | €0.12 |
| CleanseLegends · 5 | Legends | 5 | Rare | €72.42 |
| CleanseMasters Edition III · 5 | Masters Edition III | 5 | Rare | — |
| CleansingThe Dark · 4 | The Dark | 4 | Rare | €10.33 |
| Cleansing BeamCommander Anthology · 78 | Commander Anthology | 78 | Uncommon | €0.06 |
| Cleansing BeamCommander 2011 · 116 | Commander 2011 | 116 | Uncommon | €0.07 |
| Cleansing BeamRavnica: City of Guilds · 118 | Ravnica: City of Guilds | 118 | Uncommon | €0.07 |
| Cleansing MeditationTorment · 3 | Torment | 3 | Uncommon | €3.38 |
| Cleansing NovaCommander 2020 · 83 | Commander 2020 | 83 | Rare | €0.15 |
| Cleansing NovaCommander 2021 · 86 | Commander 2021 | 86 | Rare | €0.34 |
| Cleansing NovaCommander Masters · 817 | Commander Masters | 817 | Rare | €0.25 |
| Cleansing NovaFinal Fantasy Commander · 235 | Final Fantasy Commander | 235 | Rare | €0.26 |