نشأة النوميرون

(This card is always treated as a "Galaxy-Eyes" card.)
If 3 or more LIGHT Dragon monsters with 3000 or more original ATK are on the field: Special Summon 1 Dragon "Number" Xyz Monster from your Extra Deck, then attach this card on the field to it as material. You can only apply this effect of "Numeron Creation" once per turn.