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

Does this card's <When Attacking> effect prevent deletion in battles against Security Digimon?
Yes, it is not deleted.
Ruled Mar 28, 2024
Does this card's <When Attacking> effect prevent deletion even when my opponent's deleted Digimon has <Retaliation>?
No. Deletion by <Retaliation> is deletion by an effect, not deletion in battle.
Ruled Mar 28, 2024
If I have 7 cards in my hand upon an attack by my Digimon with 2 of this card in its digivolution cards, can I draw a total of 2 cards from both instances of this card's effect?
No, you can't. Upon the attack declaration, the inherited effects on the 2 copies of this card simultaneously trigger, then the player determines the activation order. However, because your hand increases to 8 cards from <Draw 1> on the 1st card, the effect's conditions aren't met for the 2nd card, so the effect doesn't activate. As a result, you only draw 1 card.
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.