{{Cleanup}}{{Show card image|Red Gadget|"[[Red Gadget]]", a card with a Trigger Effect.}}A '''Trigger Monster EffectsEffect''' (Japanese: 誘発効果 ''Yūhatsu Kōka'' activate whenever ) is a certain condition on the [[Playing Field|Field]], the nature type of playmonster effect that is activated at a specific time. This can either be in response to a specific event or during a particular phase or step. Unless otherwise specified, or the progress of the Trigger Effects can be activated during either player’s turn, is met.

"Trigger Effects are [[Zaborg the Thunder MonarchSpell Speed]]'s" effect is triggered 1 and therefore cannot be chained to other effects, except when it is [[Tribute Summon]]edmultiple Trigger Effects want to be activated simultaneously, and in which case they will form a Chain with each other according to the effect requires it to rules for [[destroySimultaneous Effects|simultaneous effects]] 1 monster on the field.

'''Optional Trigger Effects''' that are effects that don't happen automatically when activated in response to a specific event, such as a card being destroyed, or a card being added to the trigger condition is fulfilledhand, are activated in the yellow box of the "[[controlFast effect timing]]ling player decides whether to activate it " chart, and must either be activated at this point, or notat all. These effects involve cards like "[[Mystic Tomato]]", Examples include "[[Peten the Dark ClownJurrac Guaiba]]", or and "[[Dark Magician of ChaosNumber 39: Utopia]]". With Optional Trigger Effects it is possible to [[Missing the Timing|Miss the Timing]].

When two Optional For optional Trigger Effects try to that activate at the same time such as two copies of "Mystic Tomatowhen" destroy each other in battlea specific action occurs, neither will miss the timing, as their trigger must have been the last thing to happen was both being sent to , or else the Graveyardeffect cannot be activated. Both of the effects trigger at the same time, and form a See ''[[ChainIf... You Can VS When... You Can]]. The Turn Player's effect becomes Chain Link 1, and the opponent's effect becomes Chain Link 2for more information.

Only Trigger Effects that are not triggered by a specific event, but rather by a particular period of time, such as the activation of [[Standby Phase]], can be activated when the player has the right to perform an action and only during an Optional Trigger Effect open game state. This means that they can miss the timingonly ever be activated as Chain Link 1. In other wordsthis regard, their function is more similar to [[Ignition Effect]]s (except that they are activated outside the [[Main Phase]]) as long as the player can choose at which point during that time to activate the effect is activated. Examples include "[[Fire King High Avatar Garunix]]" and "[[Scarm, Malebranche of the resolution will never miss the timingBurning Abyss]]". So two monsters will be summoned in the above example

'''Compulsory ==Damage Step==Trigger Effects''' that are effects that must activated at a particular part of the [[resolveDamage Step]], and are not Optional. When such as the effect of "[[Simultaneous Effects Go On Chain|SEGOCAlly of Justice Catastor]]", and two or more effects trigger at the same timeactivate immediately upon their effect being triggered, the Compulsory effects all go similar to other Trigger Effects that are activated in response to the beginning a specific event. Multiple Trigger Effects of the this nature will form a Chain, and in accordance with the Optional rules for [[Simultaneous Effects|simultaneous effects are put to the end of the Chain]].

==Example==<center>[[File:ZaborgtheThunderMonarchTP8For whether or not a Trigger Effect whose trigger does not exclusively occur during the Damage Step can be activated during the Damage Step, it is best to consider each card on a case-ENby-R-UEcase basis. Usually, if such a Trigger Effect cannot be used at that time, its ''TCG'' text will state "except during the Damage Step," though this is not always the case.jpg]]</center>

{{DynamicNavigationBox==Spell/Trap effects that trigger==Spell and Trap Cards can also have effects that trigger; these effects are informally called '''Trigger-like Effects'''. When the effect of an already-face-up Spell or Trap Card is triggered, the effect functions just like the Trigger Effect of a monster and activates in the yellow box of the "[[Fast effect timing]]" chart. If multiple effects are triggered, monster or otherwise, the rules for [[Simultaneous Effects|TITLEsimultaneous effects]] are followed.  ===Continuous Trap Cards===If a [[Continuous Trap Card]] has an effect that triggers, it is also possible to activate both the Trap Card and its effect in the same Chain Link in response to the event that triggers the effect at the time when the player has the right to activate a [[fast effect]]. For example, if a monster you control is destroyed by battle whilst you control a face-up "[[Yang Zing Creation]]", if you choose to activate the effect of this face-up "[[Yang Zing Creation]]", you must do so in the yellow box of the "[[Fast effect timing]]" chart, before either player can activate fast effects. If, however, "[[Yang Zing Creation]]" is face-down on the field when the monster is destroyed by battle, so long as the monster being destroyed is still the last thing to happen, you can activate the effect of "[[Yang Zing Creation]]" in the same Chain Link as the card itself.  Continuous Trap Cards which have effects that state they must be activated while the Trap Card is already face-up on the field, such as "[[Predaplanet]]", cannot activate that effect in the same Chain Link as the Trap Card itself.  Further, Continuous Trap Cards which have rulings that state that their effect cannot be activated in the same Chain Link as the card itself must have first been activated, and resolved, for an action to be able to trigger their effects. These include "[[All-Out Attacks]]"<ref name="Card Rulings: All-Out Attacks">[https://yugipedia.com/wiki/Card_Rulings:All-Out_Attacks Card Rulings: All-Out Attacks]</ref>, "[[Coffin Seller]]"<ref name="Card Rulings: Coffin Seller">[https://yugipedia.com/wiki/Card_Rulings:Coffin_Seller Card Rulings: Coffin Seller]</ref>, "[[Cyber Summon Blaster]]"<ref name="Card Rulings: Cyber Summon Blaster">[https://yugipedia.com/wiki/Card_Rulings:Cyber_Summon_Blaster Card Rulings: Cyber Summon Blaster]</ref>, "[[Light Spiral]]"<ref name="Card Rulings: Light Spiral">[https://yugipedia.com/wiki/Card_Rulings:Light_Spiral Card Rulings: Light Spiral]</ref>, "[[Natural Disaster]]"<ref name="Card Rulings: Natural Disaster">[https://yugipedia.com/wiki/Card_Rulings:Natural_Disaster Card Rulings: Natural Disaster]</ref>, "[[Overdoom Line]]"<ref name="Card Rulings: Overdoom Line">[https://yugipedia.com/wiki/Card_Rulings:Overdoom_Line Card Rulings: Overdoom Line]</ref>, "[[PSY-Frame Accelerator]]"<ref name="Card Rulings: PSY-Frame Accelerator">[https://yugipedia.com/wiki/Card_Rulings:PSY-Frame_Accelerator PSY-Frame Accelerator]</ref>, "[[Spirit's Invitation]]"<ref name="Card Rulings: Spirit's Invitation">[https://yugipedia.com/wiki/Card_Rulings:Spirit%27s_Invitation Card Rulings: Spirit's Invitation]</ref>, "[[Swiftstrike Armor]]"<ref name="Card Rulings: Swiftstrike Armor">[https://yugipedia.com/wiki/Card_Rulings:Swiftstrike_Armor Card Rulings: Swiftstrike Armor]</ref>, and "[[Unpossessed]]"<ref name="Card Rulings: Unpossessed">[https://yugipedia.com/wiki/Card_Rulings:Unpossessed Card Rulings: Unpossessed]</ref>. ==List of ''TCG '' and ''OCG Monsters '' monsters with Ignition Monster Trigger Effects'''== |CONTENT={{#ask: Card query|[[Class 1Effect type::OfficialTrigger Effect]] |type=monster|medium=official|limit=10}} ==List of ''TCG'' and ''OCG'' Spell and Trap Cards with Trigger-like Effects== {{Card query|[[Effect type::Trigger Monster Effects||Trigger Effect]] |?Japanese Name type=non-monster|medium=official|limit=10}} ==In other languages=={{In other languages|?Rank fr_name = Effet Déclencheur|?Level de_name = Triggereffekt|?Attribute it_name = Effetto Innescato|?Type pt_name = Efeito de Gatilho|?Card Type es_name = Efecto Disparado| ja_name = 誘発効果| ja_romaji = Yūhatsu Kōka| ko_name = 유발 효과| ko_rr = Yubal Hyogwa|?ATK zh_name = 誘發效果|?DEF }}zh_pinyin = Yòufā Xiàoguǒ

[[Category:GameplayTypes of monster effects]]