SS Rose Goku Black, Heightened Form

[Auto] [Limit 1] When this card is played, choose up to 1 of your opponent's Battle Cards with an energy cost of 4 or less and KO it, then place the top card of your opponent's deck into its owner's Drop. Additionally, if you have a "Zamasu" card with a [Union] skill in play, this card gets +5000 power and [Double Strike] for the turn. [Activate:Main] G, if your Leader is a green "Zamasu" card and you have 2 or more energy : Play this card from your hand.