Dark Omastar

Prehistoric Water

If your opponent has any evolved Pok?mon in play, choose 1 of them and flip a coin. If heads, your opponent takes the highest Stage Evolution card on that Pok?mon and shuffles it into his or her deck.

Dark Tentacle30

During your opponent's next turn, the Defending Pok?mon can't evolve except from effects of attacks or Pok?mon Powers. (Benching that Pok?mon ends this effect.)