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Cocoon of Evolution
You can target 1 "Petit Moth" you control; equip this card from your hand to that target. While equipped by this effect, the original ATK/DEF of that "Petit Moth" becomes the ATK/DEF of "Cocoon of Evolution".

Coffin Seller
Each time a monster(s) is sent to your opponent's GY: Inflict 300 damage to your opponent.

Cold Wave
This card can only be activated at the start of Main Phase 1. Until your next turn, you and your opponent cannot play or Set any Spell or Trap Cards.

Collected Power
Target 1 face-up monster on the field; equip it with all Equip Cards on the field. If any of those Equip Cards is now equipped to an incorrect target, destroy that Equip Card.

Combination Attack
During a Battle Phase, you can use this effect on 1 monster that has attacked this turn and is equipped with a Union Monster. Change the Union Monster back to a monster in face-up Attack or Defense Position. Also, the monster that was equipped with the Union Monster may attack again this turn.

Command Knight
All Warrior monsters you control gain 400 ATK. If you control another monster, monsters your opponent controls cannot target this card for attacks.

Commencement Dance
This card is used to Ritual Summon "Performance of Sword". You must also Tribute monsters whose total Level Stars equal 6 or more from the field or your hand.

Compulsory Evacuation Device
Target 1 monster on the field; return that target to the hand.

Confiscation
Pay 1000 Life Points. Look at your opponent's hand, select 1 card in it and discard that card.

Continuous Destruction Punch
If the DEF of the attacked Defense Position monster on your side of the field is higher than the ATK of the attacking monster on your opponent's side of the field, destroy the attacking monster. Damage calculation is applied normally.