If this card is Special Summoned: Inflict 800 damage to your opponent, then 1 face-up monster your opponent controls loses 800 ATK and DEF. You can only use this effect of Blackwing – Nothung the Starlight once per turn. During your Main Phase, you can Normal Summon 1 Blackwing monster in addition to your Normal Summon Set. (You can only gain this effect once per turn.)