

Q2: If I activate this card's All Turns effect when multiples of my other specified Digimon or Tamers would leave the battle area at the same time by one of my effects, are all of those Digimon or Tamers prevented from leaving?
Yes, all of those Digimon or Tamers are prevented from leaving. This card's All Turns effect affects all Digimon without having to choose them.
Q3: I activated this card's All Turns effect when multiples of my Digimon would leave the battle area by an opponent's effect, and I deleted this card. Can I then activate this card's On Deletion effect before all of my opponent's effects are resolved?
No, you can't. Once all of your opponent's effects are resolved, then you can activate this card's On Deletion effect.
Lv.5 Sirenmon BT25-039 R
Ultimate | Data | Shaman/Iliad/TS
{Security} [End of Your Turn] You may play 1 [Ceresmon] from your hand with the cost reduced by 7. If this effect played, you may place this card as the played Digimon's bottom digivolution card.
[All Turns] When any of your other [Shaman] or [Iliad] trait Digimon or Tamers would leave the battle area other than by your effects, by deleting this Digimon, they don't leave.
[On Deletion] You may place this card face up as the bottom security card.
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[Opponent's Turn] [Once Per Turn] When one of your opponent's Digimon attacks, you may change the attack target to 1 of your suspended Digimon.Lv.5 Sirenmon BT25-039 R
Ultimate | Data | Shaman/Iliad/TS
[Digivolve] Lv.4 w/[TS] trait: Cost 3
{Security} [End of Your Turn] You may play 1 [Ceresmon] from your hand with the cost reduced by 7. If this effect played, you may place this card as the played Digimon's bottom digivolution card.
[All Turns] When any of your other [Shaman] or [Iliad] trait Digimon or Tamers would leave the battle area other than by your effects, by deleting this Digimon, they don't leave.
[On Deletion] You may place this card face up as the bottom security card.
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[Opponent's Turn] [Once Per Turn] When one of your opponent's Digimon attacks, you may change the attack target to 1 of your suspended Digimon.Lv.5 Sirenmon BT25-039 R ultimate | Data | Shaman/Iliad/TS [Digivolve] Lv.4 w/[TS] trait: Cost 3 (Security) [End of Your Turn] You may play 1 [Ceresmon] from your hand with the cost reduced by 7. If this effect played, you may place this card as the played Digimon's bottom digivolution card. [All Turns] When any of your other [Shaman] or [Iliad] trait Digimon or Tamers would leave the battle area other than by your effects, by deleting this Digimon, they don't leave. [On Deletion] You may place this card face up as the bottom security card. --- [Opponent's Turn] [Once Per Turn] When one of your opponent's Digimon attacks, you may change the attack target to 1 of your suspended Digimon.
Lv.5 セイレーンモン BT25-039 R
完全体 | データ種 | 神人型/イリアス/TS
{セキュリティ}【自分のターン終了時】自分の手札から、「ケレスモン」1枚を支払うコスト-7で登場できる。この効果で登場したなら、このカードを登場したデジモンの進化元の下に置ける。
【お互いのターン】特徴「神人型」/「イリアス」を持つ他の自分のデジモン/テイマーが自分の効果以外でバトルエリアを離れるとき、このデジモンを消滅させることで、離れない。
【消滅時】このカードをセキュリティの下に表向きで置ける。
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【相手のターン】[ターン1回]相手のデジモンがアタックしたとき、アタックの対象をレスト状態の自分のデジモン1体に変更できる。