If I activate this card, then play a blue Digimon later in the turn, can I return an opponent's suspended Digimon to its owner's hand?

No, if you don't have a blue Digimon in play when you activate the card's effect, you can't activate the part of the effect that returns your opponent's suspended Digimon to their hand.

Positron Laser rulings (BT3-104)

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

Effect: [Main] Up to 2 of your opponent's Digimon can't attack or block until the end of your opponent's next turn. Then, if you have a blue Digimon in play, return 1 of your opponent's suspended Digimon to their hand.
Security effect: [Security] Up to 2 of your opponent's Digimon can't attack for the turn. Then, if you have a blue Digimon in play, return 1 of your opponent's suspended Digimon to its owner's hand.

Official Q&A

If I activate this card, then play a blue Digimon later in the turn, can I return an opponent's suspended Digimon to its owner's hand?
No, if you don't have a blue Digimon in play when you activate the card's effect, you can't activate the part of the effect that returns your opponent's suspended Digimon to their hand.
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.

Positron Laser rulings (BT3-104)

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

Effect: [Main] Up to 2 of your opponent's Digimon can't attack or block until the end of your opponent's next turn. Then, if you have a blue Digimon in play, return 1 of your opponent's suspended Digimon to their hand.
Security effect: [Security] Up to 2 of your opponent's Digimon can't attack for the turn. Then, if you have a blue Digimon in play, return 1 of your opponent's suspended Digimon to its owner's hand.

Official Q&A

If I activate this card, then play a blue Digimon later in the turn, can I return an opponent's suspended Digimon to its owner's hand?
No, if you don't have a blue Digimon in play when you activate the card's effect, you can't activate the part of the effect that returns your opponent's suspended Digimon to their hand.
Ruled Mar 28, 2024

Got a line that uses Positron Laser? Map it in the builder and share it with a link.