OCG Rulings

On Summoning

• This card is a Normal Summon monster.^[1][2] You can Tribute two monsters to Tribute Summon or Set it from your hand. You can Tribute "Kaiser Sea Horse" to Tribute Summon or Set it.^[2]

• The effect which lets you Special Summon it from your hand is neither a Flip Effect nor a Continuous Effect nor an Ignition Effect nor a Trigger Effect nor a Quick Effect. Special Summoning it does not start a Chain Link.^[1]

• You can Special Summon this card by Tributing two Set monsters with 2000+ ATK.^[1]

On Banishing Cards and Returning

• The effect which banishes an opponent's monster is a Quick Effect that targets one of your opponent's monsters. Returning the monsters to the field does not start a Chain Link.^[1]

• The increase to ATK lasts as long as this card remains face-up on the field.^[1]

• If "Galaxy-Eyes Photon Dragon" battles "Number 39: Utopia", then the effect of "Number 39: Utopia" activates when an attack is declared, so you can activate this effect first. If the effect activates, then you can Chain the effect of "Galaxy-Eyes Photon Dragon" to it.^[3]

• Versus control-changing effects:
  • If "Galaxy-Eyes Photon Dragon" banishes a monster that you own but your opponent controls because of "Enemy Controller", then when the monsters return to the field, the monster returns to your opponent's side of the field and then goes back to your side of the field.^[4]
  • If "Galaxy-Eyes Photon Dragon" banishes a monster that you own but your opponent controls because of "Creature Swap", then when the monsters return to the field, the monster returns to your opponent's side of the field and remains under your opponent's control.^[4]
  • If your opponent controls your "Galaxy-Eyes Photon Dragon" because of "Enemy Controller" and activates its effect, then when the monsters return to the field, "Galaxy-Eyes Photon Dragon" will return directly to its original owner's side of the field.^[4]
  • If your opponent controls your "Galaxy-Eyes Photon Dragon" because of "Creature Swap" and activates its effect, then when the monsters return to the field, "Galaxy-Eyes Photon Dragon" will return to the field of your opponent (the player who controlled it when it was banished).^[4]

• If "Galaxy-Eyes Photon Dragon" is face-down when its effect resolves, then it is banished face-down and returns to the field in face-down Defence Position. Do not increase its ATK.^[5]

• If "Magic Cylinder" is Chained to the effect of "Galaxy-Eyes Photon Dragon", then the attack is negated, but the effect of "Galaxy-Eyes Photon Dragon" is still applied. Thus, you still banish "Galaxy-Eyes Photon Dragon" and the opponent's battling monster.^[6]

• Suppose that "Galaxy-Eyes Photon Dragon" banishes itself and an opponent's monster. If "Burial from a Different Dimension" is activated and returns one of the banished monsters to the Graveyard, then at the end of the Battle Phase the remaining monster returns to the field.^[7]

• If you activate the effect of "Galaxy-Eyes Photon Dragon" when it battles a Token Monster, then the Token Monster disappears when it is removed from the field, so at the end of the Battle Phase only "Galaxy-Eyes Photon Dragon" returns to the field.^[8]

• If you activate the effect of "Galaxy-Eyes Photon Dragon" when it battles "Embodiment of Apophis", then at the end of the Battle Phase both monsters return to the field. However, "Embodiment of Apophis" is only treated as a Trap Card, so it is immediately sent to the Graveyard.^[8]

• If you activate the effect of "Galaxy-Eyes Photon Dragon" when it battles a "Stardust Dragon" Special Summoned by "Starlight Road", then at the end of the Battle Phase both monsters return to the field.^[8]

References

1. ↑ ^{1.0 1.1 1.2 1.3 1.4} Konami OCG FAQ: Effect Monster > Galaxy-Eyes Photon Dragon
2. ↑ ^{2.0 2.1} Konami OCG FAQ: Can you Advance Summon "Galaxy-Eyes Photon Dragon" from your hand?
3. ↑ Konami OCG FAQ: Please explain the order in which effects activate when "Galaxy-Eyes Photon Dragon" and "Number 39: Utopia" battle.
4. ↑ ^{4.0 4.1 4.2 4.3} Konami OCG FAQ: How do you resolve it when you activate the effect of "Galaxy-Eyes Photon Dragon" when its original owner battles his own monster?
5. ↑ Konami OCG FAQ: When resolving the effect of "Galaxy-Eyes Photon Dragon", can you banish it even if it becomes face-down?
6. ↑ Konami OCG FAQ: Is the banishing effect applied if "Magic Cylinder" is Chained to "Galaxy-Eyes Photon Dragon"?
7. ↑ Konami OCG FAQ: If one of the monsters banished by "Galaxy-Eyes Photon Dragon" is no longer banished because of "Burial from a Different Dimension", then does it return at the end of the Battle Phase?
8. ↑ ^{8.0 8.1 8.2} Konami OCG FAQ: If "Galaxy-Eyes Photon Dragon" battles with and banishes a Token or "Embodiment of Apophis", then do they return to the field at the end of the Battle Phase?