An opponent's Digimon without the highest DP attacks, and by using a ＜When Attacking＞ effect to increase its DP, it becomes the Digimon with the highest DP. In such cases, can the target of the attack be switched to this Digimon with this card's ＜Opp Turn＞ effect?

No, you can't. If Digimon did not have the highest DP when the attack was declared, this card's ＜Opp Turn＞ effect can't be activated.

BlackWarGreymon (X Antibody) rulings (BT11-074)

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

Effect: Reboot [Opponent's Turn] [Once Per Turn] When your opponent's Digimon with the highest DP attacks, you may switch the target of attack to this Digimon. [Opponent's Turn] [Once Per Turn] When a Digimon becomes unsuspended, if this Digimon has [BlackWarGreymon] or [X Antibody] in its digivolution cards, you may delete 1 of your opponent's Digimon with the lowest play cost.

Official Q&A

Does this card's "When a Digimon becomes unsuspended" effect activate even when my opponent's Digimon becomes unsuspended?
Yes, it activates.
Ruled Mar 28, 2024
An opponent's Digimon without the highest DP attacks, and by using a ＜When Attacking＞ effect to increase its DP, it becomes the Digimon with the highest DP. In such cases, can the target of the attack be switched to this Digimon with this card's ＜Opp Turn＞ effect?
No, you can't. If Digimon did not have the highest DP when the attack was declared, this card's ＜Opp Turn＞ effect can't be activated.
Ruled Mar 28, 2024

Got a line that uses BlackWarGreymon (X Antibody)? Map it in the builder and share it with a link.

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.

BlackWarGreymon (X Antibody) rulings (BT11-074)

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

Effect: Reboot [Opponent's Turn] [Once Per Turn] When your opponent's Digimon with the highest DP attacks, you may switch the target of attack to this Digimon. [Opponent's Turn] [Once Per Turn] When a Digimon becomes unsuspended, if this Digimon has [BlackWarGreymon] or [X Antibody] in its digivolution cards, you may delete 1 of your opponent's Digimon with the lowest play cost.

Official Q&A

Does this card's "When a Digimon becomes unsuspended" effect activate even when my opponent's Digimon becomes unsuspended?
Yes, it activates.
Ruled Mar 28, 2024
An opponent's Digimon without the highest DP attacks, and by using a ＜When Attacking＞ effect to increase its DP, it becomes the Digimon with the highest DP. In such cases, can the target of the attack be switched to this Digimon with this card's ＜Opp Turn＞ effect?
No, you can't. If Digimon did not have the highest DP when the attack was declared, this card's ＜Opp Turn＞ effect can't be activated.
Ruled Mar 28, 2024

Got a line that uses BlackWarGreymon (X Antibody)? Map it in the builder and share it with a link.