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

Which card must be placed in digivolution requirements for this card's [When Start of Your Main Phase] effect?
A black Digimon card with "Cyborg type" or "Machine type" in its trait and a black Digimon card with "Machine type" in its play cost.
Ruled Jan 24, 2025
The situation is that only the top card of the opponent's security is face-up. If you activate the [When Digivolving] effect of this card, which card of the security should you turn face up?
Turn the second card from the top of the security face up.
Ruled Jan 24, 2025
What happens to a card placed face up in security by an effect?
It becomes ostensible security and remains public. The rules are the same as for normal security, except that it is ostensible.
Ruled Jan 24, 2025
What happens when checking a security placed face down?
Checked as published. The rules are the same as for normal checks, except as published.
Ruled Jan 24, 2025
If a security placed face up is checked, does the card's [Security] effect trigger?
Yes, triggered.
Ruled Jan 24, 2025
What happens when shuffling a security that contains a security placed face up?
The security that was face up is turned back face down and then shuffled. After shuffling, the cards are not turned face up.
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.