Gotenks, Genuine Ability P-239 Promo

[Blocker] [Revenge]
[Permanent] Reduce the energy cost of this card in your hand by 1 for each yellow Battle Card with 15000 power in your Drop Area.
[Auto] When this card is played, choose up to 1 of your opponent’s Unison Cards or Battle Cards in Rest Mode, and it can’t attack during your opponent’s next turn.