If the red Tamer cards among the cards revealed from my deck do not have the [Vaccine] trait, does that mean I can't add any cards to my hand?
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Official Ruling
No, even if it does not have the [Vaccine] trait, you can add 1 red Tamer card to your hand.However, you can't add a red Digimon card to your hand if it doesn't have the [Vaccine] trait.