Cofagrigus

Grave robbers who mistake them for real coffins and get too close end up trapped inside their bodies.

Ability — Six Feet Under: Once during your turn (before your attack), you may Knock Out this Pokémon. If you do, put 3 damage counters on your opponent’s Pokémon in any way you like.

Slap of Misfortune (70): Whenever your opponent flips a coin during his or her next turn, treat it as tails.