MagnaAngemon

Q:Can I use this card's inherited effect to target one of my opponent's Digimon with 1000 DP or less and delete it?

A:Yes, you can.

Q:A Digimon with this card as a digivolution card attacks an opponent's Digimon, then that Digimon's DP is reduced to 0 and deleted by this card's inherited effect. What happens to the attack?

A:No battle occurs, and the attack ends. If there are other effects to activate (When Attacking effects, etc.), the attack ends after activating them.

Q:A Digimon with this card as a digivolution card attacks an opponent's Digimon, then the opponent blocks with a Digimon that has . Can I use this card's inherited effect to reduce the DP of the blocking Digimon to 0 and delete it?

A:No, blocking can only be performed in the blocker timing that occurs after all [When Attacking] effects finish resolving. As such, once a block has been declared, the window for activating this card's inherited effect has already passed, so it can't be activated.