Can I not attack with this card after this card's [On Play] [When Digivolving] effect grants "Penetrating" and DP+4000 to one of my Digimon?
Yes, it is possible.
2025/01/24
With the [When Digivolving] effect of "BT16-077 Dinobeamon", I played this card [On Play] and attacked a player with "BT16-077 Dinobeamon" with "Quick Attack" as it is. After that, can I attack with this card by its [On Play] [When Digivolving] effect?
No, you cannot attack. While attacking, you cannot declare a new attack. In this situation, you can attack with "BT16-077 Dino Beamon" under the [When Digivolving] effect of "BT16-077 Dino Beamon". Before the Counter timing, the card's [On Play] and [When Digivolving] effects can be activated, but you cannot declare an attack during the attack, so you cannot attack even if you activate it.
2025/01/24
If this card's [All Turns] effect is activated and two Digimon including the leaving Digimon digivolve, does the digivolved Digimon leave the Battle Area?
No, they do not leave the Battle Area. DNA digivolves digivolve as a new Digimon, so it is a different Digimon than the one that leaves.
2025/01/24