Weezingマタドガス

AbilityDetention Gas

As long as this Pokémon is your Active Pokémon, put 1 damage counter on each of your opponent's Basic Pokémon between turns.

This attack does 20 damage to each of your opponent's Benched Pokémon that has any damage counters on it. (Don't apply Weakness and Resistance for Benched Pokémon.)