Mystic Swordsman LV6

[[Lore::If you Normal Summon this card, you must place it in face-down Defense Position. If this card attacks a face-down Defense Position Monster, destroy the monster immediately with this card's effect without flipping it face-up or applying damage calculation. You can return the monster destroyed with this card's effect to the top of your opponent’s Deck, instead of sending it to the Graveyard.]]