Number C39: Utopia Ray
3 Level 4 LIGHT monsters
You can also Xyz Summon this card by using a "Number 39: Utopia" you control as the Xyz Material. (Xyz Materials attached to that monster also become Xyz Materials on this card.) You can detach 1 Xyz Material from this card; it gains 500 ATK and 1 monster your opponent controls loses 1000 ATK, until the End Phase. You must have 1000 Life Points or less to activate and to resolve this effect.