Mega Mewtwo X

Ability: Mental Barrier

While this Pokémon is in play, it can have up to 3 basic Energy attached to it, and it also can't have Energy attached by the effects of Abilities, Supporters, items, Stadiums, or Pokémon Tools. (You can't attach a special Energy to this Pokémon.)

Mega Release • 100×

This attack deals 100 more damage for each basic Energy card 👁 attached to this Pokémon.