A Summon Trigger Is Lost If the Monster Is Destroyed Before Its Window

A monster Special Summoned during a Chain can fail to activate its "If/When this card is Summoned" Trigger Effect if it is destroyed before the post-Chain activation window opens. The Summon condition being met is not enough — the monster must still be face-up on the field at the moment its Trigger Effect would activate.

This is the same class as Trigger Effects and Location Changes: the trigger condition was met, but the card left the field before it could activate, so the effect never activates. This is not negation.

The PSCT key: comma effects do not start a Chain

Whether the monster survives to its window depends on how it is destroyed, and PSCT tells you that.

An effect starts a Chain Link if, and only if, it contains a colon or a semicolon. An effect written "When X, do Y" — comma, no colon, no semicolon — does not start a Chain. It applies automatically as a result of X, during the same resolution.

So a "When [event], destroy Y" effect resolves inside the current Chain's resolution, not as a separate later Chain. Anything it destroys is gone before the game opens the next window for Trigger Effects.

Worked example — Call of the Haunted destroyed by MST

Relevant card text

Mystical Space Typhoon

"Target 1 Spell/Trap on the field; destroy that target."

Call of the Haunted

"Activate this card by targeting 1 monster in your GY; Special Summon that target in Attack Position. When this card leaves the field, destroy that monster. When that monster is destroyed, destroy this card."

Satellarknight Deneb

"If this card is Summoned: You can add 1 'tellarknight' monster from your Deck to your hand, except 'Satellarknight Deneb'. You can only use this effect of 'Satellarknight Deneb' once per turn."

Note: Call of the Haunted's "When this card leaves the field, destroy that monster" uses a comma, so it does not start a new Chain. It applies during the resolution where Call of the Haunted leaves the field.

The play

Mystical Space Typhoon targets a Set Call of the Haunted. In response, Call of the Haunted is activated to Special Summon Satellarknight Deneb from the GY.

Chain (LIFO resolution):

1. Chain Link 2 Call of the Haunted resolves first → Satellarknight Deneb is Special Summoned. Its "If this card is Summoned" condition is now met, but Trigger Effects cannot activate mid-resolution.
2. Chain Link 1 Mystical Space Typhoon resolves → Call of the Haunted is destroyed. Because it left the field, its comma effect "destroy that monster" applies right here, inside this resolution (no new Chain) → Satellarknight Deneb is destroyed and sent to the GY.
3. The Chain ends. The game now opens the window for Trigger Effects.

At that window, Satellarknight Deneb is already in the GY. Its "If this card is Summoned" effect needs the card face-up on the field, so it cannot activate.

Correct ruling

No, Satellarknight Deneb cannot activate its Trigger Effect. It met its Summon condition, but Call of the Haunted's comma effect destroyed it before the post-Chain window, so it left the field before it could activate — exactly the #22 failure mode.

The tempting wrong answer is "it was Summoned, so the trigger is ready and fires from wherever it ends up." A Summon trigger does not carry over from the GY; the monster must be on the field at the window.

Consistency check — why Jinzo survives the same play

If the revived monster is Jinzo instead, Jinzo is not destroyed. Once face-up, Jinzo negates all Trap effects on the field, so when Call of the Haunted is destroyed and its "destroy that monster" Trap effect tries to apply, Jinzo negates it.

This only makes sense because "destroy that monster" applies while the summoned monster is on the field (during the resolution), not on some later Chain — the same timing that, for a monster like Satellarknight Deneb that cannot negate it, sends it to the GY before its own Summon trigger window. See Call of the Haunted continuous effects.

Judge guidance

• "The Summon happened, so the trigger fires" is incomplete. Confirm the monster is on the field at the trigger window.
• Read PSCT punctuation: a comma "When X, do Y" applies inside the current resolution; it does not start a later Chain. So removal by such an effect happens before the next Trigger window.
• Distinguish from cases where the monster is still on the field at the end of the Chain and only removed by a chain-starting trigger afterward — there the Summon trigger can share that next Chain and activate.
• A monster that merely changes control during the Chain (e.g. stolen by Triple Tactics Talent) does not leave the field, so its Summon trigger survives to the post-Chain window — the opposite outcome from destruction. See Control Change During a Summon Trigger's Chain.
• A Summon Trigger Effect does not activate from the GY/hand; it needs the monster in its required zone.
• See also PSCT punctuation and SEGOC and resolution order.

Sources

• YGOrganization, Demystifying Rulings Part 1: PSCT — https://ygorganization.com/learnrulingspart1/ ("starts a Chain iff colon or semicolon")
• Yugipedia / Yu-Gi-Oh! Wiki Card Rulings: Mystical Space Typhoon, Call of the Haunted; "Call of the Haunted" + "Jinzo" ruling page
• Konami card text: Satellarknight Deneb, Call of the Haunted, Jinzo (Yu-Gi-Oh! Neuron / official database)