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

What happens if this card's effect activates for my [Marcus Damon] that's treated as a 12000 DP Digimon with <Rush> due to [BT13-020]/[ShineGreymon: Burst Mode]'s effect?
The DP is overwritten by the effect that activated afterward, therefore the card is treated as a Digimon with 3000 DP. The <Rush> gained from [BT13-020]/[ShineGreymon: Burst Mode]'s effect remains because it isn't overwritten by anything.
Ruled Mar 28, 2024
If [Marcus Damon] is treated as a Digimon by this card's effect and then its DP is reduced to 0 by an effect, is it deleted?
Yes, it's deleted.
Ruled Mar 28, 2024
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