Once during your turn, when you play Walrein from your hand to evolve 1 of your Pokémon, you may flip 2 coins. If both are heads, discard the Defending Pokémon and all cards attached to it. (This doesn't count as a Knocked Out Pokémon.)
Ice Bind アイスバインド
If your opponent doesn't discard a card from his or her hand, the Defending Pokémon is now Paralyzed.