Mewtwo

Psychic - 20+
This attack does 20 more damage for each Energy card attached to your opponent's Active Pokemon.

Barrier
<br>During your opponent's next turn, prevents all effects of attacks, including damage, done to this Pokemon. If 1 of your Pokemon used Barrier during your last turn, this attack can't be used. - Psychic, Psychic
During your opponent's next turn, prevents all effects of attacks, including damage, done to this Pokemon. If 1 of your Pokemon used Barrier during your last turn, this attack can't be used.