Dragon Knight of Creation (SR02-EN002) [Structure Deck: Rise of the True Dragons]

Increase this card's Level by 4 during your opponent's turn only. When this card destroys an opponent's monster by battle and sends it to the Graveyard: You can send 1 Level 7 or 8 Dragon-Type monster from your Deck to the Graveyard. You can send 1 card from your hand to the Graveyard, then target 1 Level 7 or 8 Dragon-Type monster in your Graveyard; send this card to the Graveyard, and if you do, Special Summon that monster. You can only use this effect of "Dragon Knight of Creation" once per turn.