| Corpse TradersDuel Decks: Jace vs. Vraska · 58 | Duel Decks: Jace vs. Vraska | 58 | Uncommon | €0.07 |
| Corpse TradersJumpstart · 220 | Jumpstart | 220 | Uncommon | €0.15 |
| Corroding DragonstormTarkir: Dragonstorm · 75 | Tarkir: Dragonstorm | 75 | Uncommon | €0.07 |
| Corroding DragonstormTarkir: Dragonstorm · 297 | Tarkir: Dragonstorm | 297 | Uncommon | €0.17 |
| Corrosive GaleNew Phyrexia · 107 | New Phyrexia | 107 | Uncommon | $0.15 |
| Corrosive MentorShadowmoor · 61 | Shadowmoor | 61 | Uncommon | €4.21 |
| CorruptThe Brothers' War · 88 | The Brothers' War | 88 | Uncommon | $0.11 |
| CorruptThe Brothers' War · 382 | The Brothers' War | 382 | Uncommon | €0.08 |
| CorruptDuel Decks: Divine vs. Demonic · 55 | Duel Decks: Divine vs. Demonic | 55 | Uncommon | €0.08 |
| CorruptDuel Decks: Garruk vs. Liliana · 57 | Duel Decks: Garruk vs. Liliana | 57 | Uncommon | €0.12 |
| CorruptDuel Decks Anthology: Divine vs. Demonic · 55 | Duel Decks Anthology: Divine vs. Demonic | 55 | Uncommon | €0.12 |
| CorruptDuel Decks Anthology: Garruk vs. Liliana · 57 | Duel Decks Anthology: Garruk vs. Liliana | 57 | Uncommon | €0.18 |
| CorruptMagic 2011 · 89 | Magic 2011 | 89 | Uncommon | €0.10 |
| CorruptMagic 2014 · 91 | Magic 2014 | 91 | Uncommon | €0.11 |
| CorruptShadowmoor · 62 | Shadowmoor | 62 | Uncommon | €0.12 |
| CorruptMagic Online Promos · 35120 | Magic Online Promos | 35120 | Uncommon | — |
| Corrupt Court OfficialPortal Three Kingdoms · 71 | Portal Three Kingdoms | 71 | Uncommon | €8.63 |
| Corrupted ConscienceMirrodin Besieged · 22 | Mirrodin Besieged | 22 | Uncommon | $0.54 |
| Corrupted ConscienceThe List Tokens · MBS-22 | The List Tokens | MBS-22 | Uncommon | €0.70 |
| Corrupted HarvesterScars of Mirrodin · 59 | Scars of Mirrodin | 59 | Uncommon | €0.08 |
| Corrupted ResolveNew Phyrexia · 32 | New Phyrexia | 32 | Uncommon | $0.25 |
| Corrupted RootsConflux · 41 | Conflux | 41 | Uncommon | €0.06 |
| Corrupt EunuchsPortal Three Kingdoms · 106 | Portal Three Kingdoms | 106 | Uncommon | €4.54 |
| Corrupt EunuchsMasters Edition III · 92 | Masters Edition III | 92 | Uncommon | — |
| Corrupting LicidStronghold · 54 | Stronghold | 54 | Uncommon | €0.05 |
| Corruption of TowashiMarch of the Machine · 53 | March of the Machine | 53 | Uncommon | $0.03 |
| Coruscation MageBloomburrow · 131 | Bloomburrow | 131 | Uncommon | €1.46 |
| Coruscation MageThe List Tokens · BLB-131 | The List Tokens | BLB-131 | Uncommon | — |
| Cosmic HorrorRenaissance · 52 | Renaissance | 52 | Uncommon | €0.28 |
| Cosmic RebirthMarch of the Machine: The Aftermath · 28 | March of the Machine: The Aftermath | 28 | Uncommon | €0.15 |
| Cosmic RebirthMarch of the Machine: The Aftermath · 78 | March of the Machine: The Aftermath | 78 | Uncommon | €0.22 |
| Cosmic RebirthMarch of the Machine: The Aftermath · 128 | March of the Machine: The Aftermath | 128 | Uncommon | $0.36 |
| Cosmic RebirthMarch of the Machine: The Aftermath · 208 | March of the Machine: The Aftermath | 208 | Uncommon | €1.95 |
| Costume ClosetMarvel Super Heroes Commander · 770 | Marvel Super Heroes Commander | 770 | Uncommon | €0.14 |
| Costume ClosetMarvel's Spider-Man · 5 | Marvel's Spider-Man | 5 | Uncommon | €0.14 |
| Costume ClosetThrough the Omenpaths · 7 | Through the Omenpaths | 7 | Uncommon | — |
| Cottontail CaretakerAlchemy: Bloomburrow · 2 | Alchemy: Bloomburrow | 2 | Uncommon | — |
| Council GuardianConspiracy · 15 | Conspiracy | 15 | Uncommon | €0.15 |
| Council GuardianThe List Tokens · CNS-15 | The List Tokens | CNS-15 | Uncommon | €0.14 |
| Council of AdvisorsPortal Three Kingdoms · 40 | Portal Three Kingdoms | 40 | Uncommon | €2.62 |
| Council of EchoesThe Lost Caverns of Ixalan · 51 | The Lost Caverns of Ixalan | 51 | Uncommon | €0.03 |
| Council's DeliberationThe Lord of the Rings: Tales of Middle-earth · 46 | The Lord of the Rings: Tales of Middle-earth | 46 | Uncommon | €0.08 |
| Council's DeliberationThe Lord of the Rings: Tales of Middle-earth · 497 | The Lord of the Rings: Tales of Middle-earth | 497 | Uncommon | $0.36 |
| CounterbalanceColdsnap · 31 | Coldsnap | 31 | Uncommon | €4.34 |
| CounterbalanceMystery Booster 2 Tokens · 157 | Mystery Booster 2 Tokens | 157 | Uncommon | $2.51 |
| CounterbalanceThe List Tokens · CSP-31 | The List Tokens | CSP-31 | Uncommon | €4.30 |
| CounterintelligencePortal Three Kingdoms · 41 | Portal Three Kingdoms | 41 | Uncommon | €5.21 |
| CountersculptReality Fracture · 25 | Reality Fracture | 25 | Uncommon | €0.07 |
| CounterspellUnlimited Edition · 55 | Unlimited Edition | 55 | Uncommon | €56.24 |
| CounterspellRevised Edition · 54 | Revised Edition | 54 | Uncommon | €5.26 |