

Q1: Can I activate the "if a Tamer card with the SoC trait is in this Digimon's digivolution cards, Draw 1" effect in this card's When Digivolving When Attacking effect even if I don't perform "by trashing 1 card in your hand, this Digimon gets +2000 DP for the turn"?
No, you can't activate it. If you don't perform the action specified for "by X" in such an effect, the rest of the effect won't activate.
Lv.4 Loogarmon BT15-075 C Champion | Virus | Dark Animal/X Antibody/SoC [When Digivolving] [When Attacking] By trashing 1 card in your hand, this Digimon gets +2000 DP for the turn. If a Tamer card with the [SoC] trait is in this Digimon's digivolution cards, <Draw 1>. --- [End of Attack] [Once Per Turn] If your opponent has 1 or more memory, gain 1 memory.
Lv.4 Loogarmon BT15-075 C Champion | Virus | Dark Animal/X Antibody/SoC [Digivolve] Lv.3 w/[SoC] trait: Cost 2 [When Digivolving] [When Attacking] By trashing 1 card in your hand, this Digimon gets +2000 DP for the turn. If a Tamer card with the [SoC] trait is in this Digimon's digivolution cards, <Draw 1>. --- [End of Attack] [Once Per Turn] If your opponent has 1 or more memory, gain 1 memory.
Lv.4 Loogarmon BT15-075 C champion | Virus | Dark Animal/X Antibody/SoC [Digivolve] Lv.3 w/[SoC] trait: Cost 2 [When Digivolving] [When Attacking] By trashing 1 card in your hand, this Digimon gets +2000 DP for the turn. If a Tamer card with the [SoC] trait is in this Digimon's digivolution cards, <Draw 1>. --- [End of Attack] [Once Per Turn] If your opponent has 1 or more memory, gain 1 memory.
Lv.4 ルガルモン BT15-075 C 成熟期 | ウィルス種 | 魔獣型/X抗体/SoC 【進化時】【アタック時】自分の手札を1枚破棄することで、ターン終了まで、このデジモンをDP+2000。このデジモンの進化元に特徴に「SoC」を持つテイマーカードがあるなら、≪1ドロー≫。 --- 【アタック終了時】[ターンに1回]メモリーが相手側の1以上なら、メモリー+1。