Destiny HERO - Celestial [DESO-EN006] Secret Rare

When this card declares an attack: You can target 1 face-up Spell Card your opponent controls; destroy it, and if you do, inflict 500 damage to your opponent. While you have no cards in your hand, except the turn this card was sent to the Graveyard: You can banish this card and 1 "Destiny HERO" monster from your Graveyard; draw 2 cards. You can only use this effect of "Destiny HERO - Celestial" once per turn.