Number 77: The Seven Sins

[ Fiend / Xyz / Effect ] 2 Level 12 monsters You can also Xyz Summon this card by using a Rank 10 or 11 DARK Xyz Monster you control as material. (Transfer its materials to this card.) If Summoned this way, the following effect cannot be activated this turn. Once per turn: You can detach 2 materials from this card; banish as many Special Summoned monsters your opponent controls as possible, then attach 1 of those banished monsters to this card as material. If this face-up card on the field would be destroyed by battle or card effect, you can detach 1 material from this card instead. ATK/ 4000 DEF/ 3000