

Q1: Can I use this card's On Play When Digivolving effect to give "Start of Your Main Phase This Digimon attacks" to a Digimon that isn't affected by effects?
You can give that effect to such Digimon, but if the Digimon isn't affected by effects upon the trigger timing, the gained effect won't trigger.
Q2: When does "when this Digimon wins a battle" trigger?
It triggers when the battle is won. When the Digimon with this effect wins a battle, the opponent's Digimon that lost the battle is deleted, then the "when this Digimon wins a battle" effect can be activated.
Q3: Does a "when this Digimon wins a battle" effect also trigger when a battle against a Security Digimon is won?
Yes, it triggers.
Q4: A Digimon with a "when this Digimon wins a battle" effect won a battle, and the opponent's Digimon that lost the battle is deleted. At such times, in what order can players activate the "when this Digimon wins a battle" effect and the effects that trigger upon the losing Digimon being deleted?
They trigger simultaneously, so the turn player can activate their effects first.
Q5: A Digimon with a "when this Digimon wins a battle" effect won a battle, and the opponent's Digimon lost the battle. At such times, in what order can players activate the "when this Digimon wins a battle" effect and the loser Digimon's effects such as "when this Digimon would be deleted" and "when this Digimon would leave the battle area" effects?
The "when this Digimon would be deleted" and "when this Digimon would leave the battle area" effects can be activated first.
Q6: A Digimon with a "when this Digimon wins a battle" effect won a battle, and the opponent's Digimon lost the battle. At such times, can the "when this Digimon wins a battle" effect be activated even if an effect prevents the opponent's Digimon from being deleted?
Yes, it can be activated.
Q7: Can I activate this card's inherited effect even if my opponent's Digimon and the Digimon that has this card in its digivolution cards are deleted at the same timing?
No, you can't activate it.
Lv.5 GreatGrizzlymon BT25-054 R Ultimate | Vaccine | Beastkin/Iliad/TS <Blocker> [On Play] [When Digivolving] Give 1 of your opponent's Digimon "[Start of Your Main Phase] This Digimon attacks." until their turn ends. [All Turns] When this Digimon wins a battle, it may digivolve into [Callismon] or [Marsmon] in the hand without paying the cost. --- [All Turns] [Once Per Turn] When this Digimon deletes your opponent's Digimon in battle, trash their top security card.
Lv.5 GreatGrizzlymon BT25-054 R Ultimate | Vaccine | Beastkin/Iliad/TS [Digivolve] Lv.4 w/[TS] trait: Cost 3 <Blocker> [On Play] [When Digivolving] Give 1 of your opponent's Digimon "[Start of Your Main Phase] This Digimon attacks." until their turn ends. [All Turns] When this Digimon wins a battle, it may digivolve into [Callismon] or [Marsmon] in the hand without paying the cost. --- [All Turns] [Once Per Turn] When this Digimon deletes your opponent's Digimon in battle, trash their top security card.
Lv.5 GreatGrizzlymon BT25-054 R ultimate | Vaccine | Beastkin/Iliad/TS [Digivolve] Lv.4 w/[TS] trait: Cost 3 <Blocker> [On Play] [When Digivolving] Give 1 of your opponent's Digimon "[Start of Your Main Phase] This Digimon attacks." until their turn ends. [All Turns] When this Digimon wins a battle, it may digivolve into [Callismon] or [Marsmon] in the hand without paying the cost. --- [All Turns] [Once Per Turn] When this Digimon deletes your opponent's Digimon in battle, trash their top security card.
Lv.5 グレートグリズモン BT25-054 R 完全体 | ワクチン種 | 獣人型/イリアス/TS ≪ブロッカー≫ 【登場時】【進化時】相手のターン終了まで、相手のデジモン1体に「【自分のメインフェイズ開始時】このデジモンでアタックする。」の効果を与える。 【お互いのターン】このデジモンがバトルに勝ったとき、このデジモンを手札の「カリスモン」/「マルスモン」にコストを支払わず進化できる。 --- 【お互いのターン】[ターン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。