Monster Lore2 Level 7 Dragon monsters
If you can Pendulum Summon Level 7, you can Pendulum Summon this face-up card in your Extra Deck. If this card is Xyz Summoned using a Dragon Xyz Monster as material: You can change the ATK of as many Level 7 or lower monsters your opponent currently controls as possible to 0, and if you do, this turn, this card can attack all those monsters once each, and each time 1 is destroyed by those battles, inflict 1200 damage to your opponent. Your opponent takes no battle damage the turn you activate this effect. If this card in the Monster Zone is destroyed by battle or card effect: You can destroy as many cards in your Pendulum Zones as possible (min. 1), and if you do, place this card in your Pendulum Zone.