Activates 1 of these effects.
• When your opponent activates a Spell/Trap Card while a “Dream Mirror of Joy” is in a Field Zone: Negate the activation, and if you do, destroy that card.
• When your opponent would Special Summon monster(s) while a “Dream Mirror of Terror” is in a Field Zone: Negate that Summon, and if you do, destroy that monster.
You can only activate 1 “Dream Mirror Oneiromancy” per turn.
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