When an opponent's monster declares an attack: You can send this card from your hand or face-up field to the GY; Special Summon 1 Level 7 LIGHT Dragon monster from your hand. (Quick Effect): You can banish this card from your GY, then target 1 Level 7 LIGHT Dragon monster you control or in your GY; return it to your hand. You can only use 1 "Starry Knight Flamel" effect per turn, and only once that turn.