Rulings
Q1: This Digimon has Leon Alexander in its digivolution cards, and I activated its When Digivolving effect. Can it give Security Attack -1 to my opponent's Digimon that are played into the battle area afterward?
Yes, it can. This card's When Digivolving effect affects "all of your opponent's Digimon," therefore it will also apply to opponent's Digimon that are newly played until the end of their turn.
Q2: If I have exactly 3 cards in my security stack, do I activate both the "1 of your opponent's Digimon gets -6000 DP" effect and <Recovery +1 (Deck)> when activating this card's End of Your Turn effect?
Yes, that's correct.
Q3: When I have 3 security cards, can I use this card's End of Your Turn effect to gain <Recovery +1 (Deck)> and then use 1 of my Digimon to attack an opponent's Digimon if my security stack increases to 4 cards?
Yes, you can. Once the End of Your Turn effect activates, you can perform the part of the effect after "then" regardless of the number of security cards.
Data Sources
Lv.6 Kazuchimon BT17-040 SR Mega | Vaccine | Shaman/Abadin Electronics [Digivolve] Lv.5 w/[Pulsemon] in text: Cost 3 [When Digivolving] Suspend 1 of your opponent's Digimon. If [Leon Alexander] is in this Digimon's digivolution cards, all of your opponent's Digimon gain <Security A. -1> until the end of their turn. [End of Your Turn] [Once Per Turn] If you have 3 or more security cards, 1 of your opponent's Digimon gets -6000 DP for the turn. If you have 3 or fewer, <Recovery +1 (Deck)>. Then, 1 of your Digimon may attack an opponent's Digimon. --- Inherited: [All Turns] [Once Per Turn] When a card is removed from your security stack, if this Digimon has [Fenriloogamon] in its name, 1 of your opponent's Digimon gets -8000 DP for the turn.
Lv.6 Kazuchimon BT17-040 SR Mega | Vaccine | Shaman/Abadin Electronics [Digivolve] Lv.5 w/[Pulsemon] in text: Cost 3 [When Digivolving] Suspend 1 of your opponent's Digimon. If [Leon Alexander] is in this Digimon's digivolution cards, all of your opponent's Digimon gain <Security A. -1> until the end of their turn. [End of Your Turn] [Once Per Turn] If you have 3 or more security cards, 1 of your opponent's Digimon gets -6000 DP for the turn. If you have 3 or fewer, <Recovery +1 (Deck)>. Then, 1 of your Digimon may attack an opponent's Digimon. --- Inherited: [All Turns] [Once Per Turn] When a card is removed from your security stack, if this Digimon has [Fenriloogamon] in its name, 1 of your opponent's Digimon gets -8000 DP for the turn.
Lv.6 Kazuchimon BT17-040 SR Mega | Vaccine | Shaman/Abadin Electronics [Digivolve] Lv.5 w/[Pulsemon] in text: Cost 3 [When Digivolving] Suspend 1 of your opponent's Digimon. Then, if [Leon Alexander] is in this Digimon's digivolution cards, all of your opponent's Digimon gain <Security A. -1> until the end of their turn. [End of Your Turn] [Once Per Turn] If you have 3 or more security cards, 1 of your opponent's Digimon gets -6000 DP for the turn. If you have 3 or fewer security cards, <Recovery +1 (Deck)>. Then, 1 of your Digimon may attack an opponent's Digimon. --- Inherited: [All Turns] [Once Per Turn] When a card is removed from your security stack, if this Digimon has [Fenriloogamon] in its name, 1 of your opponent's Digimon gets -8000 DP for the turn.
Lv.6 カヅチモン BT17-040 SR 究極体 | ワクチン種 | 神人型/AE社 「パルスモン」の記述があるLv.5:コスト3 【進化時】相手のデジモン1体をレストさせる。このデジモンの進化元に「レオン アレクサンダー」があるなら、相手のターン終了まで、相手のデジモン全てに≪Sアタック-1≫を与える。 【自分のターン終了時】[ターンに1回]自分のセキュリティが3枚以上なら、ターン終了まで、相手のデジモン1体をDP-6000。自分のセキュリティが3枚以下なら、≪リカバリー+1《デッキ》≫。その後、自分のデジモン1体で相手のデジモンにアタックできる。 --- Inherited: 【お互いのターン】[ターンに1回]自分のセキュリティが減ったとき、このデジモンが名称に「フェンリルガモン」を含むなら、ターン終了まで、相手のデジモン1体をDP-8000。