2 Level 6 monsters

When this card is Xyz Summoned: You can target 1 "Number" monster in your Graveyard; equip that target to this card. This card gains ATK equal to half the ATK of that equipped monster. Once per turn: You can detach 1 Xyz Material from this card, then send the monster equipped by this effect to the Graveyard; halve your opponent's Life Points. You cannot conduct your Battle Phase the turn you activate this effect.