Amazoness Archers [DR1-EN151] Super Rare

You can only activate this card when your opponent declares an attack and if there is a monster(s) on your side of the field that includes 'Amazoness' in its card name, or is named 'Amazon Archer'. All monsters on your opponent's side of the field are changed to face-up Attack Position (Flip Effects are not activated), and as long as they remain face-up on the field, their ATK(s) are decreased by 500 points. Your opponent must attack with all of his/her monsters.