3 official rulings from Bandai, last ruled Jan 24, 2025. Straight answers to how this card actually resolves.

Can I use this card's [Main] effect to return cards in my opponent's trash to the bottom of the deck so that their Lv. total is 8 or less?
No, you cannot. The [By] condition cannot be performed only in part. For the [Main] effect of this card, it must be returned to the bottom of the deck for the specified Lv. total.
Ruled Jan 24, 2025
If the [Main] effect of this card returns Lv.3 and Lv.6 Digimon cards from the opponent's Trash to the deck, which Lv. Digimon card can I play from my Trash?
Digimon cards of Lv.3 and Lv.6 can be played. You can play one Digimon card of the same Lv. as the returned card.
Ruled Jan 24, 2025
If the [Main] effect of this card returns 3 Lv.3 Digimon cards from the opponent's trash to the deck, can I play 3 Lv.3 Digimon cards from my trash?
Yes, you can play. You can play one card of the same Lv. as the card you returned.
Ruled Jan 24, 2025
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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.