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Lock (呪縛ロック Rokku) is a keyword, introduced in Trial Deck 11: Star-vader Invasion.

You can't move; you can't attack; you can't even retire. All you can do is just float there.

Suiko Tatsunagi, Episode 130

When a unit is locked, it turns face down, and remains face down in where it is until the end of its owner's turn (Known as a "locked card"). A locked card cannot be used to perform any action; it cannot attack, boost, intercept, use its own abilities, be used to pay costs, move to another circle or zone, or be retired by calling another unit over it. The locked card not considered a unit, and both it as its circle are considered to not exist while it is locked.

In the anime, this is visually shown as two rings collapsing onto the unit reverting it into card form and on the table, the face down unit is shown to emit sparks when a cardfighter attempts to touch it.

In Cardfight!! Vanguard G, their lock is shown as a red sphere engulfing the locked unit. Though, the Star-vaders variation still have two orbiting rings around the lock.


All locked cards are turned face up at the beginning of the owner's end phase, this being called "Unlock" (解呪アンロック Anrokku). When a locked card is unlocked, it turns face up in [Stand] state, and any effect gained that it had before it was locked disappears.

  • Eg: If the unit would leave the circle at the end of turn, it would not happen since it was locked.

Also, the unlocked card is not considered to be placed on (RC) and thus "on-call effects" are not activated.

Introduced in Booster Set 14: Brilliant Strike are units that can unlock other units before the end phase, most notably Salvation Lion, Grand Ezel Scissors who unlocks all of his rear-guards with his Limit Break. This allows units to make their opponent's locking efforts nullified or to relock units to reuse locking skills. G Trial Deck 5: Fateful Star Messiah introduces Link Joker units that gain skills if they are unlocked.

Omega Lock

"Omega Lock" (Ω呪縛オメガロック Omega Rokku) is a special type of lock introduced in Booster Set 15: Infinite Rebirth, which it prevents a locked card to be unlocked during the owner's end phase.

When a card is Omega Locked, during the owner's next turn, on his/her end phase, they cannot unlock that unit. The unit will be unlocked at the end of the opponents second turn since that unit was Omega Locked. Though, they still can unlock those units in their other phases in those two turns by card effects such as Salvation Lion, Grand Ezel Scissors.

It is first shown in Episode 156 of the anime.

Do note that if a locked card is targeted multiple times to be Omega Locked in the same turn, it won't prolong the Omega Lock's duration of two turns.

Frequently Asked Question

  1. Question: If I have Liberator of the Round Table, Alfred as my vanguard and 1 of my 5 rear-guards has been locked, will my vanguard's Power be 19000 or 21000 due to his Limit Break?
    Answer: 19000. Your locked card does not exist on the field anymore.
  2. Question: If my vanguard is Dragonic Overlord and my only rear-guard is an Embodiment of Armor, Bahr which is locked, will my Dragonic Overlord gets [Power]-2000?
    Answer: Yes. It will be treated as though there is not a unit on the rear-guard circle, meaning Dragonic Overlord will get [Power]-2000. Note that this does not affect skills such as Lord, since the locked card no longer counts as a unit.
  3. Question: If the card text says that I may lock my own rear-guards instead of my opponent's, then do my locked rear-guards stay locked until the end of my opponent's turn?
    Answer: No. If you are the one who locked your rear-guards then you will turn them face up at your end phase. If you lock your opponent's rear-guards, then your opponent must wait until the end of his/her next turn. Also, be noted that Prison Gate Star-vader, Palladium's skill allows you to bypass this ruling.
  4. Question: If I have a locked card in one of my rear-guard circles and they no longer exist on the field can I retire it to place a new unit in it's place?
    Answer: No. Though the card no longer exists on the field it cannot be retired because there would be nothing to retire. The idea is that the rear-guard circle the card is locked on is engulfed by the void. So a locked card cannot be retired to play a new one.
  5. Question: If I unlocked my locked cards during my main phase, are they unlocked as rest or stand?
    Answer: They will unlock in the standing position.

For more information see:

List of Cards

Can Lock

Angel Feather

Aqua Force

Dark Irregulars

Dimension Police


Great Nature


Link Joker



Neo Nectar

Nova Grappler

Pale Moon

Royal Paladin

Can Omega Lock

Link Joker

Can Unlock

Cray Elemental


Gold Paladin


Link Joker



Royal Paladin



  • A unit is encircled by two black rings...
  • ...engulfed in a bright light...
  • ...reduced to a card...
  • ...and being locked by two rings.
  • The unit is locked in a red/black sphere.

Normal Unlock

  • A card turned face down by lock...
  • ...unlocks at the end of turn.

Unlocking by Skill

  • The lock is cut...
  • ...the black ring is destroyed...
  • ...and the unit is unlocked.

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