Cloyster [Secret Wonders]

[0] Withdraw - Flip a coin. If heads, prevent all damage done to Cloyster by attacks during your opponent's next turn.

[1W] Spine Missile - Flip 4 coins. For each heads, choose an opponent's Pokemon in play and this attack does 20 damage to those Pokemon. (You may choose the same Pokemon more than once.) (Don't apply Weakness and Resistance for Benched Pokemon.)