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

This card’s effect reveals 4 cards. If the cards revealed only include either a card with [Kyubimon], [Taomon], or [Sakuyamon] or [Rika Nonaka], can I still add a card to my hand?
Yes, as long as either a card with [Kyubimon], [Taomon], or [Sakuyamon] or [Rika Nonaka] is among the cards revealed, you can add it to your hand.
Ruled Mar 28, 2024
This card's effect reveals 4 cards. If both a card with [Kyubimon], [Taomon], or [Sakuyamon] and [Rika Nonaka] are among the cards revealed, can I choose to only add one of them to my hand, and place the remaining card at the bottom of my deck?
No. This card's effect reads “Add 1 card [...] among them to your hand,” so you must add as many cards to your hand as possible. If both a card with [Kyubimon], [Taomon], or [Sakuyamon] and [Rika Nonaka] are among the cards revealed, you must add both to your hand.
Ruled Mar 28, 2024
I have 8 or more yellow Tamers in play, and use [BT2-099]/[Glorious Burst]. Can I activate this card's inherited effect?
No. [BT2-099]/[Glorious Burst]’s cost has been changed to 1, so using it isn’t considered to be using an Option card with a cost of 2 or more.
Ruled Mar 28, 2024
I have 1 card in my security stack. If I use [BT7-100]/[Qualialise Blast], can I activate this card’s inherited effect?
Yes. When you use [BT7-100]/[Qualialise Blast]’s effect, it changes the cost paid to the number of cards in your security stack, but doesn't change the cost of the card itself. As such, the game considers you to have used an Option card with a cost of 5, allowing you to activate this card’s inherited effect.
Ruled Mar 28, 2024
I use an Option card with a cost of 2 or more by an effect that reads, “Use an Option card without paying its cost.” Can I activate this card’s inherited effect?
Yes. Effects that use Option cards without paying their costs are skipping the costs entirely, not changing them.
Ruled Mar 28, 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.