Rulings
Q1: Is the "while you have no face-up security cards" condition met when I have 0 cards in my security stack?
Yes, it's met.
Q2: Can I also activate this card’s Main effect when I have 0 cards in my security stack?
Yes, you can. In such cases, you can't add a card from your security stack to your hand, therefore you only place this card in your security stack.
Q3: What position on the memory gauge does "if you have 1 or more memory" refer to?
It refers to when the memory gauge is at 1 or further to the left on your side.
Q4: What happens to cards placed face up in the security stack by effects?
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.
Q5: What happens upon a security check for a security card that is placed face-up?
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.
Q6: Does a card's Security effect trigger upon a security check with that card placed face-up?
Yes, it triggers.
Q7: What happens if I shuffle a security stack that includes security cards placed face-up?
Any face-up cards are placed face down, then you shuffle the cards. After shuffling, all cards are left face-down.
Q8: I have this card placed face-up in my security stack. An opponent's Digimon digivolved, and I now have 1 or more memory. If my opponent's digivolved Digimon activates an effect and my Digimon with the DS trait attacks at such times, can this card's All Turns effect prevent my Digimon from being deleted in that battle?
Yes, it is not deleted. This card's All Turns effect will activate as soon as you have 1 or more memory, therefore none of your Digimon with the DS trait will be deleted in battle.
Data Sources
Deep Savers EX8-068 U DS While you have no face-up security cards, you may ignore this card's color requirements. [Security] [All Turns] While you have 1 or more memory, none of your [DS] trait Digimon can be deleted in battle. [Main] Add your bottom security card to the hand. Then, place this card face up as the bottom security card. --- [Security] You may play 1 level 5 or lower Digimon card with the [DS] trait from your hand without paying the cost.
Deep Savers EX8-068 U DS While you have no face-up security cards, you may ignore this card's color requirements. [Security] [All Turns] While you have 1 or more memory, none of your [DS] trait Digimon can be deleted in battle. [Main] Add your bottom security card to the hand. Then, place this card face up as the bottom security card. --- [Security] You may play 1 level 5 or lower Digimon card with the [DS] trait from your hand without paying the cost.
Deep Savers EX8-068 U DS | DS While you have no face-up security cards, you may ignore this card's color requirements. (Security) [All Turns] While you have 1 or more memory, none of your [DS] trait Digimon can be deleted in battle. [Main] Add your bottom security card to the hand. Then, place this card face up as the bottom security card. ---
ディープセイバーズ EX8-068 U DS 自分の表向きのセキュリティがない間、このカードは色条件を無視できる。 [セキュリティ]【お互いのターン】メモリーが1以上の間、特徴に「DS」を持つ自分のデジモン全てはバトルで消滅しない。 【メイン】自分のセキュリティを下から1枚手札に加える。その後、このカードをセキュリティの下に表向きで置く。 --- 【セキュリティ】自分の手札から、特徴に「DS」を持つLv.5以下のデジモンカード1枚をコストを支払わずに登場できる。