Mewtwo (Base Set 2 10/130)
0
Psychic Colorless

Psychic

10+

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

Psychic Psychic

Barrier

Discard 1 Psychic 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.