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

Can this card’s <Opp Turn> effect <De Digivolve> an opponent’s Digimon when it unsuspends during my opponent’s unsuspend phase?
Yes, it can.
Ruled Mar 28, 2024
During my opponent’s unsuspend phase, more than one of my opponent's Digimon become unsuspended. Do I choose which Digimon to <De Digivolve> with this card’s <Opp Turn> effect?
Yes, you choose one of those Digimon to <De Digivolve>.
Ruled Mar 28, 2024
When an opponent’s Digimon becomes unsuspended, can I choose not to activate this card’s <Opp Turn> effect to <De Digivolve> that Digimon in order to preserve the effect’s <Once> limit?
No, you can't.
Ruled Mar 28, 2024
My opponent unsuspends a Digimon that has no digivolution cards or is level 3. Can I choose not to activate the <De Digivolve> from this card’s <Opp Turn> effect?
No, you can't. <De Digivolve> activates even if the opponent's Digimon that becomes unsuspended is level 3 or has no digivolution cards.
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.