| Trigger Effect
|Japanese (base text)||
Trigger Effects (Japanese:
Trigger Effects are Spell Speed 1 effects. In general, Trigger Effects can be activated during any phase, although many individual Trigger Effects have restrictions on the phases in which they can be activated as part of their activation timing. Trigger Effects can be mandatory or optional. Here is an example. If you control "Starving Venom Fusion Dragon", its effect states: "If this card is Fusion Summoned, you can make this card gain ATK equal to 1 opponent's Special Summoned Monster." If this card IS successfully Fusion Summoned, then I can choose when to activate the effect. This is because "IF" effects cannot miss the timing. However, this effect only lasts until the end of the current turn.
Trigger Effects activate only once each time their condition is met. For example, if you control "Solemn Wishes" and draw 2 cards at once, you will only gain 500 LP because you performed only one act of drawing cards; and if you control "Aromage Jasmine" and gain 1000 LP, you will draw 1 card (not 1000).
Identifying Trigger Effects
For cards with Problem-Solving Card Text, Trigger Effects can be identified by looking for a timing or event-related condition, followed by a colon. For example, the text "During the Standby Phase: You can..." or "If this card is destroyed by battle: You can..." indicates that the effect is a Trigger Effect, as they identify a specific phase or event during which the effect activates.
Optional effects with the activation timing "Once per turn: You can..." or "During your Main Phase: You can..." are Ignition Effects rather than Trigger Effects. Trigger Effects may use the phrase "once per turn" in their activation timing, but not on its own.
Effects with the phrase "during either player's turn" in their activation timing are Quick Effects rather than Trigger Effects.
Missing the timing
Optional Trigger Effects that use the word "when" in their activation timing can miss the timing. This occurs when a optional Trigger Effect that uses "when" meets its activation timing, but another action is performed before it has a chance to activate.
If an optional Trigger Effect that does not miss the timing or a mandatory Trigger Effect meets its activation timing at an instant that Spell Speed 1 effects cannot be activated, such as when a Chain already exists, then it will start a Chain at the next possible opportunity. "If" and "during" are commonly used in place of "when" for effects that cannot miss the timing.
For example, "Peten the Dark Clown" has a "when" optional Trigger Effect. When a monster is Tribute Summoned using "Peten the Dark Clown" as Tribute, first the Tribute "Peten the Dark Clown" is sent to the Graveyard, then a monster is Tribute Summoned. The effect of "Peten the Dark Clown" would have met its activation timing when it was sent to the Graveyard, but because a new monster was Summoned before its effect had a chance to activate, its effect cannot activate.
In contrast, "Mermail Abysshilde" has an "if" optional Trigger Effect and "Flowerbot" has a mandatory Trigger Effect. If "Mermail Abysshilde" or "Flowerbot" is Tributed for a Tribute Summon, its Trigger Effect can be activated.
Simultaneous Effects Go On Chain
The effect of "Zaborg the Thunder Monarch" is a mandatory Trigger Effect that activates when it is Tribute Summoned. This effect targets 1 monster on the field, then destroys that target when it resolves.
List of TCG and OCG Monsters with Trigger Effects
|Japanese name||Rank||Level||Attribute||Type||Card type||ATK||DEF|
|8-Claws Scorpion||八つ手サソリ||2||DARK||Insect||Monster Card|
|Absorbing Kid from the Sky||吸収天児||4||LIGHT||Fairy||Monster Card|
|Absorouter Dragon||アブソルーター・ドラゴン||7||DARK||Dragon||Monster Card|
|Abyss Actor - Comic Relief||魔界劇団－コミック・リリーフ||3||DARK||Fiend||Monster Card|
|Abyss Actor - Mellow Madonna||魔界劇団－メロー・マドンナ||7||DARK||Fiend||Monster Card|
|Advent Skull Archfiend||デーモンの降臨||6||DARK||Fiend||Monster Card|
|Agave Dragon||竜絶蘭||EARTH||Wyrm||Monster Card|
|Alien Psychic||エーリアン・サイコ||1||DARK||Reptile||Monster Card|
|All-Eyes Phantom Dragon||ゴッドアイズ・ファントム・ドラゴン||10||LIGHT||Dragon||Monster Card|
|... further results|