Rulings
Q1: I have 2 face-up security cards. If this card's On Play When Digivolving effect activates, do I perform De-Digivolve 2?
No. You perform De-Digivolve 1 twice, not De-Digivolve 2. When performing De-Digivolve 2, the top 2 cards are considered to be trashed at the same time, but when performing De-Digivolve 1 twice, the top 2 cards are trashed 1 at a time. For example, if using De-Digivolve 2 to simultaneously trash the top 2 cards of a suspended Digimon and the 2nd card trashed is BT15-047 Kabuterimon, its effect won't activate. However, if performing De-Digivolve 1 twice and the Digimon becomes BT15-047 Kabuterimon after the 1st instance of De-Digivolve 1 trashes a card, it won't be affected by the 2nd instance of De-Digivolve 1 and won't be trashed.
Data Sources
Lv.5 CannonBeemon BT18-052 U Ultimate | Virus | Cyborg/X Antibody/Royal Base [Digivolve] Lv.4 w/[Royal Base] trait: Cost 3 [Security] [Opponent's Turn] All of your [Royal Base] trait Digimon gain <Blocker>. [On Play] [When Digivolving] For each of your face-up security cards, <De-Digivolve 1> 1 of your opponent's Digimon. (Rule) Trait: Has [Insectoid] Type. --- Inherited: [All Turns] [Once Per Turn] When this Digimon deletes your opponent's Digimon in battle, trash their top security card.
Lv.5 CannonBeemon BT18-052 U Ultimate | Virus | Cyborg/X Antibody/Royal Base [Digivolve] Lv.4 w/[Royal Base] trait: Cost 3 [Security] [Opponent's Turn] All of your [Royal Base] trait Digimon gain <Blocker>. [On Play] [When Digivolving] For each of your face-up security cards, <De-Digivolve 1> 1 of your opponent's Digimon. (Rule) Trait: Has [Insectoid] Type. --- Inherited: [All Turns] [Once Per Turn] When this Digimon deletes your opponent's Digimon in battle, trash their top security card.
Lv.5 CannonBeemon BT18-052 U Ultimate | Virus | Cyborg/X Antibody/Royal Base [Digivolve] Lv.4 w/[Royal Base] trait: Cost 3 (Security) [Opponent's Turn] All of your [Royal Base] trait Digimon gain <Blocker>. [On Play] [When Digivolving] For each of your face up security cards, <De-Digivolve 1> 1 of your opponent's Digimon. --- Inherited: [All Turns] [Once Per Turn] When this Digimon deletes your opponent's Digimon in battle, trash their top security card.
Lv.5 キャノンビーモン BT18-052 U 完全体 | ウィルス種 | サイボーグ型/X抗体/ローヤルベース 特徴に「ローヤルベース」を持つLv.4:コスト3 [セキュリティ]【相手のターン】特徴に「ローヤルベース」を持つ自分のデジモン全ては≪ブロッカー≫を得る。 【登場時】【進化時】相手のデジモン1体を自分の表向きのセキュリティ1枚ごとに、≪退化1≫。 〈ルール〉特徴:タイプ「昆虫型」を持つ。 --- Inherited: 【お互いのターン】[ターンに1回]このデジモンがバトルで相手のデジモンを消滅させたとき、相手のセキュリティを上から1枚破棄する。