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

I use this Digimon to attack an opponent's Digimon, then use this Digimon's effect to reduce the opponent's Digimon to 0 DP. What happens to the attack?
No battle occurs, and the attack ends. If there are other When Attacking effects, "when one of your Digimon attacks" effects, and/or effects activated at blocker timing, they activate, and then the attack ends.
Ruled Mar 28, 2024
After I use this Digimon's effect to give an opponent's Digimon -2000 DP, my memory drops to 2 or less. Does my opponent's Digimon revert to its original DP?
No, the effect has already activated, so the -2000 DP lasts until the end of the turn.
Ruled Mar 28, 2024
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