(Quick Effect): You can target 1 LIGHT monster you control; Tribute it, and if you do, Special Summon 1 Level 7 LIGHT Dragon monster from your hand. You can banish this card from your GY, then target 1 Level 7 LIGHT Dragon monster you control; it gains 1000 ATK until the end of your opponent's turn. You can only use each effect of "Starry Knight Astel" once per turn.
