Pokémon Trading Card Game - Mewtwo - Base Set 10

Psychic 10+
Does 10 damage plus 10 more damage for each Energy card attached to the Defending Pokémon.

Barrier
Discard 1 Energy card attached to Mewtwo in order to use this attack. During your opponent's next turn, prevent all effects of attacks, including damage, done to Mewtwo.

LV.53 #150