Winr

Q:This card's [Start of Your Main Phase] effect and BT18-004 [Puroromon]'s inherited effect triggered simultaneously when I had no face-up security cards. At such times, can I use BT18-004 [Puroromon]'s effect to place a card from my hand face up as my bottom security card, then use this card's effect to gain 1 memory?

A:Yes, you can. Related Cards

Q:What happens to cards placed face up in the security stack by effects?

A:They become face-up security cards that remain revealed. Other than rules that specify face-up security cards, the rules apply in the same manner as standard security cards.

Q:What happens upon a security check for a security card that is placed face-up?

A:The check is performed with the card left revealed. Other than rules for cards left revealed, the rules apply in the same manner as standard security checks.

Q:Does a card's [Security] effect trigger upon a security check with that card placed face-up?

A:Yes, it triggers.

Q:What happens if I shuffle a security stack that includes security cards placed face-up?

A:Any face-up cards are placed face down, then you shuffle the cards. After shuffling, all cards are left face-down.