If this card is trashed from my deck and placed in the battle area during my opponent's turn, can I activate ＜Delay＞ once my opponent's turn ends and it becomes my turn?

Yes, you can activate it because it is a different turn now.

Rivals' Barrage rulings (ST14-12)

1 official ruling from Bandai, last ruled Mar 28, 2024. Straight answers to how this card actually resolves.

Effect: When this card is trashed from your deck, you may place it in the battle area. [Main] Delete 1 of your opponent's Digimon with the highest level. [Main] Delay ・Return 1 purple Digimon card or Tamer card from your trash to your hand.
Security effect: [Security] Delete 1 of your opponent's Digimon with the highest level.

Official Q&A

If this card is trashed from my deck and placed in the battle area during my opponent's turn, can I activate ＜Delay＞ once my opponent's turn ends and it becomes my turn?
Yes, you can activate it because it is a different turn now.
Ruled Mar 28, 2024

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Questions and answers are Bandai's official rulings, collected and translated by the DigimonCardGame Wiki community and reused here under CC BY-SA. Card names and card text are © their respective publishers; Combalo is not affiliated with Bandai.

Rivals' Barrage rulings (ST14-12)

1 official ruling from Bandai, last ruled Mar 28, 2024. Straight answers to how this card actually resolves.

Effect: When this card is trashed from your deck, you may place it in the battle area. [Main] Delete 1 of your opponent's Digimon with the highest level. [Main] Delay ・Return 1 purple Digimon card or Tamer card from your trash to your hand.
Security effect: [Security] Delete 1 of your opponent's Digimon with the highest level.

Official Q&A

If this card is trashed from my deck and placed in the battle area during my opponent's turn, can I activate ＜Delay＞ once my opponent's turn ends and it becomes my turn?
Yes, you can activate it because it is a different turn now.
Ruled Mar 28, 2024

Got a line that uses Rivals' Barrage? Map it in the builder and share it with a link.