Scenario 1: The Trap Card is Activated by Your Opponent's Action
* Example: You activate "Torrential Tribute" to destroy all monsters on the field, and your opponent activates "Call of the Haunted" to bring back a monster from their graveyard.
* Result: "Torrential Tribute" would resolve first because it was activated before "Call of the Haunted." The monster summoned by "Call of the Haunted" would be destroyed because it was on the field when "Torrential Tribute" resolved.
* General Rule: When a Trap Card is activated in response to an opponent's action, it resolves before the opponent's action is fully completed.
Scenario 2: The Trap Card is Activated by Your Opponent's Action, but It Doesn't Target
* Example: You activate "Mirror Force" to destroy all attacking monsters, and your opponent activates "Solemn Warning" to negate the activation of a Spell/Trap card.
* Result: "Solemn Warning" would negate the activation of "Mirror Force," preventing it from resolving. "Mirror Force" would not be destroyed, but it would be sent to the graveyard.
* General Rule: Some Trap Cards are not "targeted" and can be negated by other cards.
Scenario 3: The Trap Card is a Counter Trap and Your Opponent Activates a Spell or Trap Card
* Example: Your opponent activates "Pot of Greed" to draw two cards, and you activate "Magic Jammer" to negate the activation of a Spell/Trap card.
* Result: "Magic Jammer" would negate the activation of "Pot of Greed," preventing it from resolving. "Magic Jammer" would not be destroyed.
* General Rule: Counter Trap Cards are activated in response to another Spell or Trap card. They do not target a specific card and are often activated to prevent a card from resolving.
In summary:
* Trap Cards that are activated in response to an opponent's action generally resolve before the opponent's action is completed.
* Trap Cards can be negated by other cards, including other Trap Cards.
* Counter Trap Cards are activated in response to other Spell or Trap Cards and negate their activation.
It's always best to consult the specific card text to understand how a Trap Card interacts with other cards in the game.