Valkyrie Erda (DANE-EN087) - Dark Neostorm Unlimited

You can only control 1 "Valkyrie Erda". While you control this card, Special Summoned by the effect of a "Valkyrie" card, all face-up monsters your opponent controls lose 1000 ATK. Any card destroyed by battle or card effect that would be sent to your opponent's GY is banished instead.