Rulings
Q1: Can I digivolve into this card from a Digimon in my breeding area that has {{EffectLinkArchetype|Omnimon}}?
No, you can't digivolve from a Digimon in your breeding area that has {{EffectLinkArchetype|Omnimon}} using this card's effect.
Q2: I attack an opponent's Digimon with this Digimon, and use its When Attacking effect to delete the opposing Digimon. What happens to the attack?
The target of attack is no longer in play, so the attack ends without a battle.
Q3: I attack an opponent's Digimon with this Digimon, and use its When Attacking effect to delete the opposing Digimon. If this Digimon has Piercing, can I check the opponent's security cards?
No. You didn't delete the opponent's Digimon in battle, so Piercing doesn't activate.
Q4: My opponent attacks one of my Digimon with this Digimon, using its When Attacking effect to delete my Digimon. Can I use another Digimon with Blocker to block the attack?
Yes, you can. If you do, the blocking Digimon will battle this Digimon.
Q5: My opponent's Digimon attacks. Can this card's Opponent's Turn effect be used to to end the attack before the attacking Digimon's When Attacking effect activates?
No. This effect is activated at counter timing, which means it only activates after the When Attacking effect has finished activating.
Q6: My opponent's Digimon used a When Attacking effect to delete one of my Digimon with an On Deletion effect. If I use this card's Opponent's Turn effect to end the attack, does the On Deletion effect activate?
Yes. The On Deletion effect activates immediately after the deletion occurs, so it activates before this card's Opponent's Turn effect.
Q7: My opponent attacks with a Digimon. After activating my BT1-082 Rosemon's effect, can I use this card's Opponent's Turn effect to end the attack?
Yes, you can.
Q8: My opponent attacks with a Digimon. After comparing DP in battle, can I activate this card's Opponent's Turn effect to end the attack?
No. The battle has already concluded, which means the counter timing window for activating the effect has passed, so you can't activate this effect.
Q9: If I use this card's Opponent's Turn effect, will the game treat the attack as if it never occurred?
No. When Attacking effects will activate as normal.
Q10: Can I digivolve one of my Digimon with {{EffectLinkArchetype|Omnimon}} in the battle area into this card in the hand when an effect to digivolve one of my Digimon is activated?
Yes, you can.
Data Sources
Lv.7 Omnimon X Anti-body BT5-111 SEC Mega | Vaccine | Holy Warrior/Royal Knight/X-Antibody Your Digimon with [Omnimon] in its name can digivolve into this card in your hand for a memory cost of 3, ignoring this card's digivolution requirements.[When Attacking] Delete 1 of your opponent's Digimon with DP less than or equal to this Digimon's DP.[Opponent's Turn] When your opponent's Digimon attacks, you may trash 2 of this Digimon's digivolution cards to end the attack.
Lv.7 Omnimon X Anti-body BT5-111 SEC Mega | Vaccine | Holy Warrior/Royal Knight/X-Antibody Your Digimon with [Omnimon] in its name can digivolve into this card in your hand for a memory cost of 3, ignoring this card's digivolution requirements.[When Attacking] Delete 1 of your opponent's Digimon with DP less than or equal to this Digimon's DP.[Opponent's Turn] When your opponent's Digimon attacks, you may trash 2 of this Digimon's digivolution cards to end the attack.
Lv.7 Omnimon (X Antibody) BT5-111 SEC Mega | Vaccine | Holy Warrior/Royal Knight/X Antibody Your Digimon with [Omnimon] in its name can digivolve into this card in your hand for a cost of 3, ignoring digivolution requirements. [When Attacking] Delete 1 of your opponent's Digimon with DP less than or equal to this Digimon's DP. [Opponent's Turn] When an opponent's Digimon attacks, by trashing 2 of this Digimon's digivolution cards, end the attack.
Lv.7 オメガモンX抗体 BT5-111 SEC 究極体 | ワクチン種 | 聖騎士型/ロイヤルナイツ/X抗体 名称に「オメガモン」を含む自分のデジモンは手札のこのカードに進化条件を無視して進化コスト3で進化できる。 【アタック時】このデジモンのDP以下の相手のデジモン1体を消滅させる。 【相手のターン】相手のデジモンがアタックしたとき、このデジモンの進化元を、選んで2枚破棄することで、そのアタックを終了する。