



Q1: What order do a Security effect, "when ... performs a security check" effect, and "when a card is removed from ... security stack" effect activate when they trigger simultaneously upon a security check?
Security effects take precedence for activation. Upon a security check, a Security effect will immediately activate without pending activation. For other triggered effects, the turn player activates their effects first.
Q2: If this card is checked from a security stack, does its Security effect activate, then does it battle with the attacking Digimon?
Yes, its Security effect activates, then it battles.
Lv.4 Dimetromon P-189 P Champion | Virus | Reptile/LIBERATOR [Security] You may play 1 card with the [LIBERATOR] trait and a play cost of 4 or less from your hand or trash without paying the cost. <Progress> (While attacking, your opponent's effects don't affect this Digimon.) --- [Your Turn] [Once Per Turn] When your opponent's security stack is removed from, gain 1 memory.
Lv.4 Dimetromon P-189 P Champion | Virus | Reptile/LIBERATOR [Security] You may play 1 card with the [LIBERATOR] trait and a play cost of 4 or less from your hand or trash without paying the cost. <Progress> (While attacking, your opponent's effects don't affect this Digimon.) --- [Your Turn] [Once Per Turn] When your opponent's security stack is removed from, gain 1 memory.
Lv.4 Dimetromon P-189 P champion | Virus | Reptile/LIBERATOR [Security] You may play 1 card with the [LIBERATOR] trait and a play cost of 4 or less from your hand or trash without paying the cost. [Security] You may play 1 card with the [LIBERATOR] trait and a play cost of 4 or less from your hand or trash without paying the cost. <Progress> --- [Your Turn] [Once Per Turn] When your opponent's security stack is removed from, gain 1 memory.
Lv.4 ディメトロモン P-189 P 成熟期 | ウィルス種 | 爬虫類型/リベレイター 【セキュリティ】自分の手札/トラッシュから、特徴に「リベレイター」を持つ登場コスト4以下のカード1枚をコストを支払わずに登場できる。 ≪プログレス≫(アタック中のこのデジモンは相手の効果を受けない) --- 【自分のターン】[ターンに1回]相手のセキュリティが減ったとき、メモリー+1。