4 official rulings from Bandai, last ruled Sep 6, 2024. Straight answers to how this card actually resolves.

If my Digimon has 2 instances of <Security Attack -1>, does this card's <Your Turn> effect change them to <Security Attack +2>?
No, this effect changes them to 2 instances of <Security Attack +1>, not <Security Attack +2>.
Ruled Jun 28, 2024
Can a Digimon with either or be a target for this card's <End Opp Turn> effect?
Yes, it can.
Ruled Jun 28, 2024
Do both 1 [Sanzomon] and 1 [Gokuumon], [Sagomon] or [Cho-Hakkaimon] have to be in this Digimon's digivolution cards in order to play them for this card's <All Turns> effect?
No, you can play just one of them if only one or the other is in digivolution cards.
Ruled Sep 6, 2024
What kind of effect is this card's <Your Turn> effect?
This effect changes your Digimon's effects to . For example, a Digimon with <Security Attack -1> will be changed to have <Security Attack +1>, and a Digimon with <Security Attack -2> will be changed to have <Security Attack +2>.
Ruled Sep 6, 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.