Contract with Don Thousand
Contract with Exodia
Contract with the Abyss
Contract with the Dark Master
Contract with the Void
Contrast HERO Chaos
Converging Wills Dragon
Converging Wishes
Convert Contact
Convex Knight
Convulsion of Nature
Cooky★Yummy Way
Cooky☆Yummy
Cooling Embers
Coordius the Triphasic Dealmon
Copy Knight
Copy Plant
Copycat
Coral Dragon
Core Blast
Core Blaster
Core Compression
Core of Chaos
Core Overclock
Core Reinforcement
Core Transport Unit
Cornfield Coatl
Corridor of Agony
Corroding Shark
Corrosive Scales
Corrupted Keys
Corrupted Ritual Records
Corruption Cell "A"
Cosmic Blazar Dragon
Cosmic Compass
Cosmic Cyclone
Cosmic Flare
Cosmic Fortress Gol'gar
Cosmic Horror Gangi'el
Cosmic Quasar Dragon
Cosmic Slicer Zer'oll
Cosmic Tree Irmistil
Cosmo Brain
Cosmo Queen
Cosmo Queen the Queen of Prayers
Cosmos Channelling
Cost Down
Counselor Lily
Counter Cleaner
Counter Counter
Counter Gate
Counter Gem
Counterforce
Couple of Aces
Couplet the Melodious Songstress
Courageous Crimson Chevalier Bradamante
Court of Cards
Court of Justice
Covering Fire
Crab Turtle