Galaxy Summoner

If this card is Normal or Special Summoned: You can target 1 "Photon" or "Galaxy" monster in your GY, except "Galaxy Summoner"; Special Summon it in Defense Position. You can target 1 other LIGHT monster you control that has a Level; its Level becomes 4 until the end of this turn. You can only use each effect of "Galaxy Summoner" once per turn.