A Stage 2 Pokemon Card of type Water with the title Dark Omastar and 70 HP of rarity Rare evolved from Dark Omanyte from the set Neo Destiny and the flavor text: Nothing can escape once wrapped in its tentacles, which it uses for self-defense as well as to catch food. It has the attack Prehistoric Water with the cost Water, the energy cost 1 with the description: If your opponent has any evolved Pokemon in play, choose 1 of them and flip a coin. If heads, your opponent takes the highest Stage Evolution card on that Pokemon and shuffles it into his or her deck. It has the attack Dark Tentacle with the cost Water, Colorless, the energy cost 2 and the damage of 30 with the description: During your opponent's next turn, the Defending Pokemon can't evolve except from effects of attacks or Pokemon Powers. (Benching that Pokemon ends this effect.) It has weakness against Grass 2. 
Dark Omastar