Hyper Galaxy

Tribute 1 monster with 2000 or more ATK, except "Galaxy-Eyes Photon Dragon", then target 1 monster your opponent controls with 2000 or more ATK; Tribute it, and if you do, Special Summon 1 "Galaxy-Eyes Photon Dragon" from your hand, Deck, or GY. You can only activate 1 "Hyper Galaxy" per turn.