Number 69: Heraldry Crest - Dark Matter Demolition
Archetype:Heraldry
Type:Xyz Effect Monster
Effect
5 Level 4 monsters Cannot be destroyed by battle or card effects. Once per turn (Quick Effect): You can detach 1 material from this card, then target 1 face-up monster your opponent controls; that monster's name becomes "Unknown". Negate any "Unknown" effects activated by your opponent.
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