Unown Pアンノーン[P]

Poké-PowerPUT

Once during your turn (before your attack), if Unown P is on your Bench, you may put 1 damage counter on 1 of your Pokémon (excluding any Unown).

Each player discards the top card of his or her deck. This attack does 20 damage plus 20 more damage for each Unown discarded in this way.