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

Which player chooses which of my opponent's security cards is trashed by this card's <When Digivolving><When Attacking> effect?
The player that activated this effect chooses.
Ruled Mar 28, 2024
My security cards were revealed due to the <When Digivolving> effect of this opponent's card, and 1 of them was trashed. Can I treat this as "when a card is removed from your security stack" and activate [BT4-097]/[Kari Kamiya]'s effect?
Yes, you can activate it. When a revealed card is trashed from the deck or security stack, it is not considered to be trashed from the deck or security stack, but it is considered that a card was removed from the security stack, so [BT4-097]/[Kari Kamiya]'s effect can be activated.
Ruled Mar 28, 2024
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