Double Strike
Activate Battle , if you have 4 or more energy and you choose 2 Alien cards in your Battle Area other than Kefla, Roar of Destruction : Return the chosen cards to their owners' hands, then play this card from your hand, and you can't play Battle Cards for the duration of the turn.
Auto When you play this card, choose up to 1 of your opponent's Battle Cards, and it gets -20000 power for the duration of the turn.