Seal is a keyword action.
These new cards are put into Forbidden Impulses, and when you put the Forbidden Impulse into the Battle Zone, you put a varying amount of cards listed on the impulse from the top of your deck onto the Impulse face down. To flip over the Impulse to the creature side, you have to put all the seals into your graveyard by putting a Command that has the same civilization as the sealed card into the battle zone. Seals are put into the graveyard before the creature's on-play effects trigger.
Certain cards can also allow you to seal your opponent's creatures. Your opponent's creatures are sealed by placing the top card of their deck onto them face down. While an opponent's creature is sealed, the sealed creature isn't treated as a creature, can't leave the battle zone, can't attack, can't block and can't trigger any abilities listed on it and is treated as if the creature wasn't there. The seals can be removed by card removal, by putting commands that have the same civilization as the sealed card into the battle zone or by various card effects such as Liberation of the End.
Seals are the strongest form of Removal in Duel Masters as the creatures don't leave the battle zone and don't trigger leave or Put Into Graveyard abilities, but also denies their existence. However, it is ineffective against decks with huge amounts of Commands as they can easily deny the removal. However, it can still disrupt the opponent's plans by making his key cards unrecoverable, or even deck out the opponent when he has too many creatures in the battle zone.
List of cards that deal with Sealing/Unsealing
Cards that seal your opponent's creatures
Cards that seal your creatures
Cards that specifically remove your seals
Cards that seal themselves with an ability
Cards that control unseal removal
- (Seals sent to a graveyard only.)
- (Limits your seal removal only to summoning darkness or fire commands that cost 5 or more, or via ZERO.)
- If a creature is unsealed any time besides the start of the turn, if it is tapped, it doesn't untap until the start of its owner's next turn.
- When targeting cards, a seal is treated as having a cost of 0.
- When you put a multicolored Command into the Battle Zone, you may unseal one monocolored creature which matches a civilization with it.
- To successfully unseal a multicolored creature, you must put a Command into the battle zone with one of the matching civilizations.
- Putting a Zero Civilization command into the battle zone doesn't remove seals from Zero Civilization creatures as Zero is not a civilization.
Awaken ● Battle ● Block ● Break ● Cast ● Charge ● Cross
Destroy ● Discard ● Dragsolution ● Expand ● Forbidden Liberate
Fortify ● Gachinko Judge ● Generate ● Gacharange Summon ● Link ● Reveal ● Seal
Search ● Shuffle ● Summon ● Switch ● Tap ● Trigger ● Upside Down ● Use
Ability ● Artist ● Card Illustration ● Card Name ● Card Number
Card Rarity ● Card Type ● Cost ● Civilization ● Mana Cost ● Mana Number
Power ● Race ● Soul ● Subtype ● Summon Cost ● Supertype
Dragheart Creature ● Dragheart Fortress ● Dragheart Weapon
Evolution Creature ● Evolution Cross Gear
Evolution Dragheart Creature ● Evolution Exile Creature ● Evolution Psychic Creature
Exile Creature ● Final Forbidden Creature ● Final Forbidden Field ● Forbidden Core ● Forbidden Creature
Forbidden Field ● Forbidden Impulse ● Gacharange Creature ● Happiness Field ● Moonless Night Field
Mono Artifact ● Neo Creature ● Neo Evolution Creature ● Neo Gacharange Creature ● Orega Aura
Psychic Creature ● Psychic Field ● Psychic Super Creature
T2 Field ● Ceremony of Zeron ● Zeron Creature ● Zeron Nebula
Super Deck Zero Duel ● Start Deck Champion Finals
Adds Civilization ● Adds Race ● Alternate Win ● Alternative Cost
Attack Bend ● Basic Card ● Cantrip ● Card Discard ● Chump Block
Cost Reduction ● Deck Manipulation ● Degenerate ● Diamond State
Draw Engine ● Draw Lock ● Draw Source ● Draw Spell
Extra Turn ● Finisher ● Graveyard Fertilizer ● Graveyard Summon
Hand Addition ● Hand Change ● Increase Power
Infinite ● Infinite Attacker ● Infinite Blocker
Mana Acceleration ● Mana Burn ● Mana Curve ● Mana Summon
Opponent Reliance ● Peeping ● Prevents Attack ● Prevents Defeat
Reset ● Resistance ● Reverse Fury Charge ● Reverse Slayer ● Shield Addition
Shield Burn ● Shield Change ● Shield Peek
Suicide ● Skip the rest of the turn ● Trample
Unattackable ● Unblockable ● Unchoosable
Vigilance ● Win All Battles ● 3D Dragsolution
Cards that can be put into the Battle Zone at the start of the game
Blocker Based Removal ● Bounce ● Can Attack Untapped Creatures
Card Based Removal ● Decrease Power ● Fixed Removal ● Force Battle ● Mass Removal
Power Based Removal ● Reset ● Sealing ● Self Removal ● Tap In ● Tap and Destroy
4 or more of this card in your deck ● Activation Cost ● Additional Cost ● Attacking Creature
Can't be destroyed ● Choose a race ● Color Accident ● Concept ● Consists of ● Counter
Dead Card ● Deck Building ● Deck Compression ● Designer's Combo ● Evolution Icon
Evolution Source ● Face Up ● Forced ● Gacha Figure ● Game
Game Table ● Hyperspatial Cost ● Key Card ● Limited Card ● Mode ● Name Rule
Optional ● Overkill ● Play ● Power Creep ● Quasi-Vanilla ● Real Cost ● Repair
Rock-Paper-Scissors ● Stop ● System Creature ● The Over Eggplant-cross
Touch ● Trivia card ● Twinpactification