Numeron Creation (25th Anniversary Tin: Dueling Mirrors MP24-EN320) - Common Yu-Gi-Oh! Card

(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 "Number" Dragon 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.