Number 6: Chronomaly Atlandis (REDU-EN092) [Return of the Duelist]

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 to 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.