Amnesia Rush

You can only Special Summon monster(s) whose original Level is 7 once per Duel. [REQUIREMENT] Can be activated if your constructed Deck contains no Level 7 or higher Effect Monsters and all of the monsters are LIGHT Attribute Galaxy Type monsters. [EFFECT] Send 1 Level 6 or higher Normal Monster from your Deck to the Graveyard. Then, make up to 2 face-up monsters (1 Level 6 or higher Normal Monster and/or 1 Level 6 Effect Monster) on your field gain 600 ATK until the end of this turn.