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"?
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Official Ruling
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.