We have no guide price to show for this card - either it trades too rarely to track, or our sources cannot price it right now. The live listings below are the best market signal.
You and your opponent remove 1 damage counter from each of your Pokémon with damage counters on them.
If the Defending Pokémon has no damage counters on it, this attack does 40 damage. If it has any damage counters on it, this attack does 10 damage.