2 Level 9 monsters
Once per Battle Step, during your opponent's turn, if this card with Xyz Material is attacked: Negate the attack. When this card is targeted for an attack, while it has no Xyz Materials: You can target 2 monsters in your Graveyard; attach those targets to this card as Xyz Materials. During your Main Phase 1: You can detach 1 Xyz Material from this card; this card can attack your opponent directly this turn if your opponent controls a monster whose ATK is higher than this card.