Cannot be Normal Summoned/Set. Must be Special Summoned (from your hand) byTributing 1 "Dracoslayer" monster and 1 "Dracoverlord" monster， and cannot be Special Summoned by other ways. Once per turn， during either player's turn， when a card or effect is activated: You can negate the activation， and if you do， destroy it. If this card you control is destroyed by your opponent's card (by battle or card effect): You can Special Summon 1 "Dracoslayer" monster and 1 "Dracoverlord" monster from your Deck.