You can Special Summon this card (from your hand) by Tributing 2 monsters with 2000 or more ATK. During the Battle Step, if this card battles an opponent's monster (Quick Effect): You can target that opponent's monster; banish both this card from the field and that target. Return those banished monsters to the field at the end of the Battle Phase, and if you banished an Xyz Monster, this card gains 500 ATK for each material it had when it was banished.
3 Level 8 monsters
If this card is Xyz Summoned using "Galaxy-Eyes Photon Dragon" as any of its materials: All other face-up cards currently on the field have their effects negated. Once per turn: You can detach 1 material from this card; detach all materials from monsters your opponent controls, then this card gains 500 ATK for each, also it can attack up to that many times during each Battle Phase this turn.
3 Level 8 monsters
Once per turn, you can also Xyz Summon "Neo Galaxy-Eyes Photon Dragon - Photon Howling" by using 1 Rank 8 Xyz Monster you control (transfer its materials). If this card is Xyz Summoned: You can take 1 "Photon" monster from your Deck, and either Special Summon it in Defense Position or attach it to this card as material. (Quick Effect): You can detach 3 materials from this card; Tribute 1 other Xyz Monster, and if you do, negate the effects of all other face-up cards currently on the field until the end of this turn.