Extra Strike SS Son Goten (BT4-007) - Colossal Warfare

[Evolve] (RR): "Son Goten : GT" (Play this card on top of the specified card)
[Dual Attack] (Once per turn, when this card attacks, switch this card to Active Mode after the battle)
[Permanent] If you have 4 or less cards in your hand, this card gains +5000 power and can attack Battle Cards that are in Active Mode.