4 official rulings from Bandai, last ruled Sep 13, 2024. Straight answers to how this card actually resolves.

Does this card's <When Digivolving> effect prevent my opponent from playing or moving any Digimon?
Your opponent can't play Digimon with 6000 DP or less, and they can't move Digimon with 6000 DP or less.
Ruled Sep 13, 2024
During a turn when this card's <When Digivolving> effect has activated, can I use EX5-058 [Octomon]'s <On Play> <When Digivolving> effect to play a [Fujitsumon] Token into my opponent's battle area?
Yes, you can. This card's <When Digivolving> effect prevents your opponent from playing or moving Digimon with 6000 DP or less. EX5-058 [Octomon]'s <On Play> <When Digivolving> effect is an effect where you play a token, therefore you aren't prevented from playing it.
Ruled Sep 13, 2024
Can my opponent use P-143 [Drimogemon]'s <End Your Turn> effect to move it from the battle area to the breeding area during their next turn after this card's <When Digivolving> effect has activated?
No, it can't be moved. This card's <When Digivolving> effect also prevents effects from moving Digimon.
Ruled Sep 13, 2024
I activated this card's <All Turns> effect when this card in the battle area was placed for a DigiXros. Can I place the card that was played by this <All Turns> effect for that DigiXros?
No, you can't place it for that DigiXros. You declare the DigiXros at the same time as when you choose the cards to place for the DigiXros. Once placed, additional cards to place can't be chosen.
Ruled Sep 13, 2024
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Questions and answers are Bandai's official rulings, collected and translated by the DigimonCardGame Wiki community and reused here under CC BY-SA. Card names and card text are © their respective publishers; Combalo is not affiliated with Bandai.