Quaking Mirror Force [BOSH-EN076] Ultra Rare Legendary Duelists •During either player's turn: You

•During either player's turn: You can target 1 face-down monster on the field

Gains 100 ATK for each Spell in your GY

You can only use each effect of "Lunalight Yellow Marten" once per turn

(Quick Effect): You can discard 1 Spell

Quaking Mirror Force [BOSH-EN076] Ultra Rare Legendary Duelists •During either player's turn: YouSet: Breakers of Shadow Card type: Normal Trap Rarity: Ultra Rare When an opponent's monster declares an attack: Change all Attack Position monsters your opponent controls to face down Defense Position. Monsters changed to face down Defense Position by this effect cannot change their battle positions.