Dark Blade the Dragon Knight is a Rare Fusion Monster card from Yu-Gi-Oh! (Dark Revelation Volume 3, DR3). Current market price: $3.18.
Rare
Dark Revelation Volume 3 (DR3)
Card Text
"Dark Blade" + "Pitch-Dark Dragon"
Each time this card inflicts Battle Damage to your opponent, you can select up to 3 Monster Cards from your opponent's Graveyard and remove them from play.
