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

Can this card's <When Attacking> effect delete this Digimon even when my opponent has no Digimon?
Yes, it can.
Ruled Mar 28, 2024
Can I use this card's <On Deletion> effect to hatch in my breeding area when I have a Digimon in my breeding area and a Tamer?
No, you can't. You can't hatch a new Digi-Egg when you have another Digimon in your breeding area.
Ruled Mar 28, 2024
Can I use this card's <On Deletion> effect to place this card in my security stack when I have a Digimon in my breeding area and a Tamer, even if I can't hatch in my breeding area?
Yes, you can.
Ruled Mar 28, 2024
If I have a yellow card with the [Vaccine] in my hand when this card's inherited effect activates, do I have to place it at the bottom of my security stack?
No, you don't have to place it. If there are requirements for the target card and that card is in a private area, performing the action is optional.
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.