4 Level 4 monsters You can also Xyz Summon this card by using a monster you control whose original name is "Number 69: Heraldry Crest". (Transfer its materials to this card.) When your opponent activates a monster effect on the field, or an opponent's monster declares an attack (Quick Effect): You can Special Summon from your Extra Deck, 1 "Number 69: Heraldry Crest - Dark Matter Demolition" by using this face-up card you control as material, then destroy that opponent's monster. (This is treated as an Xyz Summon. Transfer this card's materials.) You can only use this effect of "Number 69: Heraldry Crest - Shatter Stream" once per turn.