Starry Knight Sky

During your Main Phase, you can Normal Summon 1 "Starry Knight" monster, or 1 Level 7 LIGHT Dragon monster, in addition to your Normal Summon/Set. (You can only gain this effect once per turn.) During your turn, if a face-up Level 7 LIGHT Dragon monster you control returns to the hand: You can draw 1 card. You can only use this effect of "Starry Knight Sky" once per turn.