[Double Strike]
[EX-Evolve] B : Blue "Nappa : Adolescence".
[Permanent] When using this card's [Evolve] skill from your hand, you can choose Battle Cards from your energy and play this card in Active Mode.
[Auto] [Once per turn] When this card attacks, activate this skill. At the end of the turn, switch up to 1 of your blue energy to Active Mode.