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

Can I play this Digimon with its <Security> effect even if it loses the battle against the attacking Digimon?
Yes, regardless of the battle's outcome, you get to play this Digimon at the end of the battle.
Ruled Mar 28, 2024
Does this card’s <On Play> effect activate when played with this card’s <Security> effect?
Yes, it does.
Ruled Mar 28, 2024
This card is flipped over during a security check, but the attacking Digimon still has security checks remaining. Does this Digimon’s effect activate first, or do I have to wait until my opponent finishes the rest of their security checks?
This Digimon is played after the battle with the attacking Digimon, and before the next check is performed. Likewise, this Digimon’s <On Play> effect activates before your opponent’s next check.
Ruled Mar 28, 2024
Got a line that uses Witchmon? Map it in the builder and share it with a link.
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.