|“||And what are we supposed to do with this, Dean? Give it a booster shot?||”|
Sword of Bruncvik, along with the other sword named Excalibur, St. George's sword, was capable of killing dragons because they were forged from the blood of dragons. Reportedly only 5 or 6 such swords remain in existence.
Dr. Visyak, who owned the Sword of Bruncvik, told Dean that finding it took two decades, countless hours, and some really bad sex with an eastern European ambassador. She described it as the love of her life.
|“|| Dean: What kind of blade?|
Dr Visyak: One forged with dragon's blood.
Upon Bobby's advice, Dean visited Dr. Visyak on how to deal with dragons; specifically how to kill one. The doctor replied that dragons can only be killed with a blade that was forged in their kin's own blood. Dean noted the conundrum: something like that can only be made by killing a dragon, which cannot be done without such a blade at one's disposal in the first place. Fortunately, Visyak happens to have one in her possession. The sword is bound to a stone to protect it, and Dr. Visyak told Dean that, according to the lore, only a knight ready to slay a dragon can pull the sword from the stone. Dean was unable to extract the sword so he resorted to plastic explosives, which, although freed the sword from the stone, also broke the sword in half. Dr. Visyak gave a horrified look at the broken, priceless sword.
|“|| Sam: And what are we supposed to do with this, Dean? Give it a booster shot?|
Dean: It's what we got. All right? We're just gonna have to get a little closer. That's all. Where are we on the caves?
When Sam and Dean tracked down two dragons who have been kidnapping women, Sam used it successfully to kill one of them while the other escapes. The current whereabouts of the sword is unknown.