Can I use this card's ＜All Turns＞ effect to give 1 of my opponent's Digimon ＜Security Attack -1＞ when this card is played by [BT13-012]/[GeoGreymon]'s ＜When Digivolving＞ effect?

Yes, you can. The timing when this card is played into the battle area and the timing when a card is removed from your security stack are the same, so the ＜All Turns＞ effect can trigger and activate.

Kari Kamiya rulings (BT15-084)

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

Effect: When an effect trashes this card from the security stack, 1 of your opponent's Digimon gains Security A. -1 until the end of their turn. [Start of Your Turn] If you have 2 or less memory, set it to 3. [All Turns] When an effect removes cards from your security stack, by suspending this Tamer, 1 of your opponent's Digimon gains Security A. -1 until the end of their turn.
Security effect: [Security] Play this card without paying the cost.

Official Q&A

Can I use this card's ＜All Turns＞ effect to give 1 of my opponent's Digimon ＜Security Attack -1＞ when this card is played by [BT13-012]/[GeoGreymon]'s ＜When Digivolving＞ effect?
Yes, you can. The timing when this card is played into the battle area and the timing when a card is removed from your security stack are the same, so the ＜All Turns＞ effect can trigger and activate.
Ruled Mar 28, 2024

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Kari Kamiya rulings (BT15-084)

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

Effect: When an effect trashes this card from the security stack, 1 of your opponent's Digimon gains Security A. -1 until the end of their turn. [Start of Your Turn] If you have 2 or less memory, set it to 3. [All Turns] When an effect removes cards from your security stack, by suspending this Tamer, 1 of your opponent's Digimon gains Security A. -1 until the end of their turn.
Security effect: [Security] Play this card without paying the cost.

Official Q&A

Can I use this card's ＜All Turns＞ effect to give 1 of my opponent's Digimon ＜Security Attack -1＞ when this card is played by [BT13-012]/[GeoGreymon]'s ＜When Digivolving＞ effect?
Yes, you can. The timing when this card is played into the battle area and the timing when a card is removed from your security stack are the same, so the ＜All Turns＞ effect can trigger and activate.
Ruled Mar 28, 2024

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