When my opponent had 2 cards in their security attack, they activated [ST10-06]/[Mastemon]'s ＜When Digivolving＞ effect, and the effect that places a card from their trash in their security stack and the effect that plays a level 5 or lower Digimon card activated. My opponent temporarily has 3 cards in their security stack, then it becomes 2 cards. Can I activate this card's ＜All Turns＞ effect?
No, you can't activate it. Even if an effect activates and increases your opponent's security stack, their security stack must have 3 or more cards when the effect finishes activating.
Ruled Mar 28, 2024

Question

When my opponent had 2 cards in their security attack, they activated [ST10-06]/[Mastemon]'s ＜When Digivolving＞ effect, and the effect that places a card from their trash in their security stack and the effect that plays a level 5 or lower Digimon card activated. My opponent temporarily has 3 cards in their security stack, then it becomes 2 cards. Can I activate this card's ＜All Turns＞ effect?

No, you can't activate it. Even if an effect activates and increases your opponent's security stack, their security stack must have 3 or more cards when the effect finishes activating.

Ruled Mar 28, 2024

Accepted Answer

No, you can't activate it. Even if an effect activates and increases your opponent's security stack, their security stack must have 3 or more cards when the effect finishes activating.

Publimon rulings (BT16-056)

Official Q&A

Publimon rulings (BT16-056)

Official Q&A