BW Black Star Promos set of Black & White series

Mew
Basic
HP60
Evolves From:
Pokédex No.151
AbilityPsyscan
Once during your turn (before your attack), if this Pokémon is your Active Pokémon, you may have your opponent reveal his or her hand.
Psychic Exchange
Shuffle your hand into your deck. Then, draw 6 cards.