Valkyrie Brunhilde (SHVA-EN004) - Shadows in Valhalla 1st Edition

Unaffected by your opponent’s Spell effects. Gains 500 ATK for each monster your opponent controls. When an opponent’s monster declares an attack: You can have this card lose exactly 1000 DEF, and if you do, your “Valkyrie” monsters cannot be destroyed by battle this turn.