

Q2: Can I choose different Digimon for the Digimon that gains Alliance and the Digimon that attacks for this card's Your Turn effect?
Yes, you can.
Q3: After my Digimon gains Alliance with this card's Your Turn effect, can I choose to not attack for the part of the effect after "then"?
Yes, you can.
Q4: Can I process the part of the effect after "then" in this card's Your Turn effect even if the "if" condition in the 1st process isn't met?
Yes, you can process it. Even if your other Digimon don't have the ADVENTURE trait, this card's Your Turn effect will allow 1 of your Digimon to attack.
Lv.5 WereGarurumon BT21-078 U Ultimate | Vaccine | Beastkin/ADVENTURE [On Play] [When Digivolving] Delete 1 of your opponent's level 4 or lower Digimon. If your Tamers have 2 or more total colors, add 1 to this effect's level maximum. [Your Turn] [Once Per Turn] When your other Digimon are played or digivolve, if any of them have the [ADVENTURE] trait, 1 of your Digimon gains <Alliance> for the turn. Then, 1 of your Digimon may attack. --- <Alliance> (When this Digimon attacks, by suspending 1 of your other Digimon, this Digimon gains <Security A. +1> and the suspended Digimon's DP for the attack.)
Lv.5 WereGarurumon BT21-078 U Ultimate | Vaccine | Beastkin/ADVENTURE [Digivolve] Lv.4 w/[Garurumon] in name or w/[ADVENTURE] trait: Cost 3 [On Play] [When Digivolving] Delete 1 of your opponent's level 4 or lower Digimon. If your Tamers have 2 or more total colors, add 1 to this effect's level maximum. [Your Turn] [Once Per Turn] When your other Digimon are played or digivolve, if any of them have the [ADVENTURE] trait, 1 of your Digimon gains <Alliance> for the turn. Then, 1 of your Digimon may attack. --- <Alliance> (When this Digimon attacks, by suspending 1 of your other Digimon, this Digimon gains <Security A. +1> and the suspended Digimon's DP for the attack.)
Lv.5 WereGarurumon BT21-078 U ultimate | Vaccine | Beastkin/ADVENTURE [Digivolve] Lv.4 w/[Garurumon] in name or w/[ADVENTURE] trait: Cost 3 [On Play] [When Digivolving] Delete 1 of your opponent's level 4 or lower Digimon. If your Tamers have 2 or more total colors, add 1 to this effect's level maximum. [Your Turn] [Once Per Turn] When your other Digimon are played or digivolve, if any of them have the [ADVENTURE] trait, 1 of your Digimon gains <Alliance> for the turn. Then, 1 of your Digimon may attack. --- <Alliance>
Lv.5 ワーガルルモン BT21-078 U 完全体 | ワクチン種 | 獣人型/アドベンチャー 【登場時】【進化時】Lv.4以下の相手のデジモン1体を消滅させる。自分のテイマーの色合計が2色以上なら、この効果のLv.上限+1。 【自分のターン】[ターンに1回]他の自分のデジモンが登場/進化したとき、そのデジモンが特徴に「アドベンチャー」を持つなら、ターン終了まで、自分のデジモン1体は≪連携≫を得る。その後、自分のデジモン1体でアタックできる。 --- ≪連携≫(このデジモンがアタックしたとき、他の自分のデジモン1体をレストさせることで、アタック終了まで、このデジモンにレストさせたデジモンのDPをプラスし、≪Sアタック+1≫を得る)