2 Level 8 monsters
If this card has a "Photon" card as Xyz Material, it cannot be destroyed by card effects. You can only use each of the following effects of "Number 90: Galaxy-Eyes Photon Lord" once per turn.
• When your opponent activates a monster effect (Quick Effect): You can detach 1 material from this card; negate the effect, then, if the detached material was a "Galaxy" card, destroy that card.
• During your opponent’s turn (Quick Effect): You can take 1 "Photon" or "Galaxy" card from your Deck, and either add it to your hand or attach it to this card as material.