I use this card, and my opponent and I both have the same number of cards in our security stacks. Later, my opponent loses a security card. When this happens, do I remove ＜Security Attack +1＞ from this card’s effect?

No. If the number of cards in your security stack is less than or equal to your opponent’s at the time you use this card, the effect doesn't go away, even if your opponent loses security cards later.

Lightning Joust rulings (ST7-11)

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

Effect: [Main] 1 of your Digimon gets +2000 DP for the turn. Then, if the number of cards in your security stack is less than or equal to your opponent's, 1 of your Digimon gains Security A. +1 for the turn.
Security effect: [Security] Add this card to the hand.

Official Q&A

I use this card, and my opponent and I both have the same number of cards in our security stacks. Later, my opponent loses a security card. When this happens, do I remove ＜Security Attack +1＞ from this card’s effect?
No. If the number of cards in your security stack is less than or equal to your opponent’s at the time you use this card, the effect doesn't go away, even if your opponent loses security cards later.
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.

Lightning Joust rulings (ST7-11)

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

Effect: [Main] 1 of your Digimon gets +2000 DP for the turn. Then, if the number of cards in your security stack is less than or equal to your opponent's, 1 of your Digimon gains Security A. +1 for the turn.
Security effect: [Security] Add this card to the hand.

Official Q&A

I use this card, and my opponent and I both have the same number of cards in our security stacks. Later, my opponent loses a security card. When this happens, do I remove ＜Security Attack +1＞ from this card’s effect?
No. If the number of cards in your security stack is less than or equal to your opponent’s at the time you use this card, the effect doesn't go away, even if your opponent loses security cards later.
Ruled Mar 28, 2024

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