As long as Flygon ex is your Active Pokémon, put 1 damage counter on each of your opponent's Benched Basic Pokémon between turns. You can't use more than 1 Sand Damage Poké-Body between turns.

Does 10 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.)