2 Level 8 Dragon monsters
Cannot attack directly unless this card has a Normal Monster as material. You can only use each of the following effects of "Indigo-Eyes Silver Dragon" once per turn. If this card is Xyz Summoned: You can negate the effects of all face-up cards your opponent currently controls. You can detach 1 material from this card, then target 1 Normal Monster in your GY or banishment; Special Summon it, and if you do, it gains 1000 ATK.