Galaxy Knight

If you control a "Photon" or "Galaxy" monster, you can Normal Summon this card without Tributing. If Summoned this way: Target 1 "Galaxy-Eyes Photon Dragon" in your GY (if possible); regardless, this card loses 1000 ATK, and if it does, Special Summon that target (if any) in Defense Position. This ATK decrease lasts until the end of this turn.

Warrior LIGHT Effect Monster 8 effect