Machspeed Kaio-Ken Son Goku (BT7-005) [Assault of the Saiyans]

Product Details

[Counter:Play] Play this card.
[Permanent] If a multicolored card is in your energy, reduce the energy cost of this card in your hand by 1.
[Auto] When you play this card, choose up to 1 of your opponent's Battle Cards and it gets -10000 power for the duration of the turn. Then, if it's your opponent's turn, choose up to 1 of your opponent's Battle Cards and it gets -5000 power for the duration of the turn.