Name : Mewtwo
HP : 60 HP
Pokemon Power : None
Psychic : (1 psychic and 1 colorless)[10+ damage] Does 10 damage plus 10 more
damage for each energy card attached to the defending Pokemon.
Barrier : (2 psychic {-1 psychic}) Discard 1 Psychic energy card attached to
Mewtwo to use this attack.  During your opponent's next turn, prevent all
effects of attacks, including damage, done to Mewtwo.
   
    Although Mewtwo may not have the best attack in terms of damage or the
greatest HP, it still has an attack that will save you in a tight situation. 
Barrier is definitely a superior attack.  With the ability to stop a
charizard dead in its tracks, Barrier can mess with the opponent's mind as
well as the opponent's attack strategy.
    Even Mewtwo has a downside.  When you play a deck with a Mewtwo, never
leave it stranded without energy.  With a HP of only 60 and a 3 enrgy retreat
cost, this is not a Pokemon you want to leave stranded.