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Let's put more than 8 triggers in the deck!
If you do that, the shield trigger rate will skyrocket!
Shield Trigger
Japanflag Sシールド・トリガー (Shīrudo Torigā)
Shield Trigger
Released:
DM-01 Base Set (OCG)
DM-01 Base Set
Japanese Wiki: 56
Category for Shield Trigger

Shield Trigger is an evergreen keyword shared among each of the 5 monocolored civilizations and Zero.

Details

While the ability was originally featured only on spells, it was later introduced on creatures in DM-04. It enables a spell to be cast or a creature to be summoned for no cost if they are returned to your hand while previously a shield in your shield zone. This enables a game to easily be reversed with a card, such as a DNA Spark disabling any more of your opponent's creatures from attacking and also disabling the opponent's creatures from the battle zone from blocking your next attack, or a Terror Pit removing your opponent's major threat, such as a fatty creature. Triggering Shield Triggers is one of the reversal and risk factors in Duel Masters, as it enables the opponent to act in a turn where he usually cannot do anything at all.

Cards with the shield trigger ability tend to be more expensive in mana cost than their regular counterparts (Such as a creature having a power to cost ratio of 5 to 1000 or a spell costing 6 or 7). Due to this factor, Quasi-Vanilla creatures with Shield Trigger are often considered among one of the worst creatures in the entire game due to them having an heavily imbalanced cost to power ratio as well as bringing no direct advantage other than potentially being summoned for no cost.

As creatures with Shield Trigger are being summoned into the battle zone instead of being "put", if a creature with a ”When you summon this creature” effect is put into the battle zone via Shield Trigger, the effect will trigger.

  • A creature such as Heavy Death Metal, End of the Century which can only be summoned can be put into the battle zone like normal this way. Vice Versa, if an ability prevents you from summoning a creature or casting a spell, you can't use the shield trigger abilities of those respective card types.

The Cross Gear card type has a variant known as Shield Trigger Cross which allows the Cross Gear can be Generated into the battle zone and crossed for no cost.

An improved version with an additional ability when you cast it while controlling no shields was introduced in DMRP-01 Here Come the Jokers!!, Super Shield Trigger.

Probability Table

The below table illustrates the chance of seeing a card that has "Shield Trigger" as one of your 5 shields when they are broken, based on the number of cards with the ability in your deck.

5: 4: 3: 2: 1: 0: Ratio:
40 100.0% 0.0% 0.0% 0.0% 0.0% 0.0% 5.0
39 87.5% 12.5% 0.0% 0.0% 0.0% 0.0% 4.9
38 76.3% 22.4% 1.3% 0.0% 0.0% 0.0% 4.8
37 66.2% 30.1% 3.5% 0.1% 0.0% 0.0% 4.6
36 57.3% 35.8% 6.5% 0.4% 0.0% 0.0% 4.5
35 49.3% 39.8% 9.9% 0.9% 0.0% 0.0% 4.4
34 42.3% 42.3% 13.6% 1.7% 0.1% 0.0% 4.3
33 36.1% 43.5% 17.4% 2.8% 0.2% 0.0% 4.1
32 30.6% 43.7% 21.1% 4.2% 0.3% 0.0% 4.0
31 25.8% 43.0% 24.6% 5.9% 0.6% 0.0% 3.9
30 21.7% 41.6% 27.8% 7.9% 1.0% 0.0% 3.8
29 18.0% 39.7% 30.5% 10.2% 1.5% 0.1% 3.6
28 14.9% 37.3% 32.9% 12.6% 2.1% 0.1% 3.5
27 12.3% 34.7% 34.7% 15.3% 2.9% 0.2% 3.4
26 10.0% 31.8% 36.0% 18.0% 4.0% 0.3% 3.3
25 8.1% 28.8% 36.7% 20.7% 5.2% 0.5% 3.1
24 6.5% 25.8% 36.9% 23.5% 6.6% 0.7% 3.0
23 5.1% 22.9% 36.6% 26.1% 8.3% 0.9% 2.9
22 4.0% 20.0% 35.8% 28.6% 10.2% 1.3% 2.8
21 3.1% 17.3% 34.6% 30.9% 12.4% 1.8% 2.6
20 2.4% 14.7% 32.9% 32.9% 14.7% 2.4% 2.5
19 1.8% 12.4% 30.9% 34.6% 34.6% 3.1% 2.4
18 1.3% 10.2% 28.6% 35.8% 20.0% 4.0% 2.3
17 0.9% 8.3% 26.1% 36.6% 22.9% 5.1% 2.1
16 0.7% 6.6% 23.5% 36.9% 25.8% 6.5% 2.0
15 0.5% 5.2% 20.7% 36.7% 28.8% 8.1% 1.9
14 0.3% 4.0% 18.0% 36.0% 31.8% 10.0% 1.8
13 0.2% 2.9% 15.3% 34.7% 34.7% 12.3% 1.6
12 0.1% 2.1% 12.6% 32.9% 37.3% 14.9% 1.5
11 0.1% 1.5% 10.2% 30.5% 39.7% 18.0% 1.4
10 0.0% 1.0% 7.9% 27.8% 41.6% 21.7% 1.3
9 0.0% 0.6% 5.9% 24.6% 43.0% 25.8% 1.1
8 0.0% 0.3% 4.2% 21.1% 43.7% 30.6% 1.0
7 0.0% 0.2% 2.8% 17.4% 43.5% 36.1% 0.9
6 0.0% 0.1% 1.7% 13.6% 42.3% 42.3% 0.8
5 0.0% 0.0% 0.9% 9.9% 39.8% 49.3% 0.6
4 0.0% 0.0% 0.4% 6.5% 35.8% 57.3% 0.5
3 0.0% 0.0% 0.1% 3.5% 30.1% 66.2% 0.4
2 0.0% 0.0% 0.0% 1.3% 22.4% 76.3% 0.3
1 0.0% 0.0% 0.0% 0.0% 12.5% 87.5% 0.1
0 0.0% 0.0% 0.0% 0.0% 0.0% 100.0% 0

Reminder Text

The latest reminder text for creatures that have Shield Trigger reads;

Shield Trigger Shield trigger (When this creature is put into your hand from your shield zone, you may summon it immediately for no cost.)

The latest reminder text for spells that have Shield Trigger reads;

Shield Trigger Shield trigger (When this spell is put into your hand from your shield zone, you may cast it immediately for no cost.)

Example

Holy Awe

Light / Spell / 6
Shield Trigger Shield trigger (When this spell is put into your hand from your shield zone, you may cast it immediately for no cost.)

■ Tap all your opponent's creatures in the battle zone.

HolyAwe


Cards with the Shield Trigger ability

Creatures

Evolution Creatures

Spells

Twinpacts

D2 Fields

Cards that give "Shield Trigger"

Cards with Conditional Shield Trigger

Support

Supporting

Cards that support Shield Triggers

Support Card: Card Effect:
Blade of Enchanting Pulses ■ You may cast a spell that has shield trigger from your mana zone for no cost.
Churentenhou, Art Hero ■ Whenever one of your opponent's creatures attacks you, you may cast a spell that has shield trigger from your hand for no cost.
El Dorado, Spirit of Taiga ■ Whenever a creature is attacking you and isn't blocked, draw a card. Then, you may cast a spell that has shield trigger for no cost or summon a creature that has shield trigger for no cost.
Elsar Baltis, Emperor of Spirits ■ Whenever your opponent uses a shield trigger ability from his shields, search your deck. You may take a spell that has shield trigger among them from your deck, then shuffle your deck. You may cast the chosen spell for no cost.
Gaga Last Mysterica, Lord of Spirits ■ When you untap this creature, draw your entire deck, except for the bottom 2 cards. Then you may cast any spells that have shield trigger for no cost and summon any creatures that have shield trigger for no cost.
Impact Rigger, Sky Elemental ■ When you put this creature or summon other creatures into the battle zone, you may cast a spell that has shield trigger from your hand for no cost.
Kanzencrime, Criminal Nobleman ■ When you put this creature into the battle zone, return all spells that have shield trigger from your graveyard to your hand.
■ Whenever your opponent uses a card that has shield trigger, you may use a card that has shield trigger from your hand for no cost.
Marianna, Light Weapon Accelerator Accelerator
Accelerator Whenever this creature attacks, search your deck. You may take a spell that has shield trigger from your deck and after you shuffle your deck, you may cast that spell for no cost.
Master of Destiny, the Spirit Wolf Phoenix ■ Whenever this creature attacks, you may cast a spell that has shield trigger from your mana zone for no cost. Then, you may put a cross gear from your mana zone into the battle zone.
Neo Wave Catastrophe ■ Whenever the crossed creature attacks, reveal the top 3 cards of your deck. You may cast any number of spells that have shield trigger from among them for no cost. Then put the rest on the bottom of your deck in any order.
Nero Gryphis, Mystic Light Emperor ■ Whenever one of your Knight creatures is destroyed, you may cast a light or darkness Knight spell or a light or darkness spell from your hand that has shield trigger that costs 6 or less for no cost.
Plasma, Revolution Dragon Formula Revolution 2—Whenever your opponent's creatures attack, if you have 2 shields or less, you may use a card that has shield trigger from your hand for no cost.
Super Terradragon Bailas Gale ■ After you cast a spell by using its shield trigger ability, put it into your hand instead of your graveyard.
Ulpheus, Dragonic Spirit ■ When you put this creature into the battle zone, if you have at least one Dragon or Angel Command in your graveyard you may cast a spell that has shield trigger from your hand for no cost.
Ulpheus, Dragonic Spirit ■ When you put this creature into the battle zone, if you have at least one Dragon or Angel Command in your graveyard you may cast a spell that has shield trigger from your hand for no cost.

 

Ultimus, Spirit of Divine Law ■ When this creature is destroyed, search your deck. You may take a spell that has shield trigger from your deck, show that spell to your opponent, and put it into your hand. Then shuffle your deck.

Anti-Shield Trigger Cards

See also: Cards that prevent Shield Triggers, Summoning and Casting, and cards that provide Lockdown

Anti-Shield Trigger Cards

Card: Card Effect:
Bluum Erkis, Flare Guardian ■ Whenever this creature would break one of your opponent's shields, your opponent shows that shield to you instead of putting it into his hand. If it's a spell that has shield trigger, you cast it for no cost, then put it into your opponent's graveyard. If it's not, your opponent puts it into his hand.
Leoldo, Divine Shield Sage Thrilling Three: Dreammate and Vehicle Bee
Thrillingthree Choose one of your opponent's shields and turn it face-up. If that card has shield trigger, put that shield into its owner's graveyard. If it doesn't, turn it face down.
Parabola Bolappi ■ Whenever you summon an evolution creature, choose a card from your opponent's shields and turn it face up. If that card has shield trigger put it in your opponent's graveyard.
Überdragon Bolmeteus Crimson ■ Whenever your Fire Birds would break a shield, look at that shield. If that shield has shield trigger, your opponent puts that shield into his graveyard. If it doesn't, your opponent puts it into his hand.

Cards with effects triggered by Shield Triggers

Cards with effects triggered by Shield Triggers

Card: Card Effect:
Dual Carion, Spirit Knight ■ Whenever your opponent uses a shield trigger ability, you may put the top card of your deck into your mana zone.
Elsar Baltis, Emperor of Spirits ■ Whenever your opponent uses a shield trigger ability from his shields, search your deck. You may take a spell that has shield trigger among them from your deck, then shuffle your deck. You may cast the chosen spell for no cost.
Emperor Quazla ■ Whenever your opponent uses the shield trigger ability of one of his shields, draw up to 2 cards.
Glena Vuele, the Hypnotic ■ Whenever your opponent uses the shield trigger ability of one of his shields, you may add the top card of your deck to your shields face down.
Kanzencrime, Criminal Nobleman ■ Whenever your opponent uses a card that has shield trigger, you may use a card that has shield trigger from your hand for no cost.
Nightmare Dragoon ■ Whenever your opponent uses the shield trigger ability of one of his shields, your opponent discards a card from his hand.
Pokolul ■ Whenever your opponent uses the shield trigger ability of a shield broken by this creature, you may untap this creature.
Turtle Horn, the Imposing ■ Whenever your opponent uses the shield trigger ability of one of his shields, search your deck. You may take a creature from your deck, show that creature to your opponent, and put it into your hand. Then shuffle your deck.

Rulings

  • Q: If I summon a creature with Shield Trigger that also has Blocker Blocker, can that creature block on that turn?
  • Q: If a creature can attack untapped creatures, can it attack a creature that is summoned by Shield Trigger?
    • A: Yes, a creature summoned by Shield Trigger is just like any other creature.

Related Categories

  • For cards that give your shields the Shield Trigger ability, see here.
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