the_debt_of_time

"In the story, it talks about three brothers who are able to evade Death, as though
Death were a real person. Death offers them each a gift. One brother asks for a wand
powerful enough to defeat any wizard. I assume that this is the same fairy tale wand that's
known as the Death Stick or the Wand of Destiny. Professor Binns mentioned it a few
times in History of Magic," she said, frowning down at the book in her hands.
"So do you think it's real?" Harry asked.
Sirius shrugged. "Maybe."
"Of course not," Hermione said at the same time. "Sirius, it's ridiculous to even
think that something like that could exist."
"Oh yeah? Tell Harry what the other two brothers asked for in the story." He
gestured as if allowing her to take the stage.
Hermione glared at him. "Fine. The second brother received a stone that could
bring back the dead. The third brother asked for a Cloak of Invisibility."
"So a Cloak of Invisibility... But not just any cloak, a cloak that never loses its
charm, never breaks or tears, and is impervious to jinxes and hexes." Sirius grinned smugly
as though he had already won the argument. He tapped his index finger against his bottom
lip, ignoring the dark look that Hermione was directing at him. "I wonder where we could
find such an object."
"Even if the cloak exists, the other two are preposterous," she protested.
"Yes, it's preposterous to think that people could come back from the dead," Harry
said sarcastically and turned to Sirius for backup. Sirius dipped his head solemnly; he
figured that his expression would have appeared almost genuine if not for the glint of
mischief he knew was in his eye.
"Harry, Horcruxes," Hermione admonished when he chuckled in amusement.
"What we need to be concerned with is how to find a way to destroy the locket and then
find the others." She reached for her bag. "Now, I've been researching―"
Sirius growled. "When the hell have you been resting?"
"When Ron's in here," she answered as she eyed Sirius and Harry. "You two won't
leave me alone. Now, there're only two known ways to destroy a Horcrux: basilisk venom
and Fiendfyre."
"Do you know how to cast Fiendfyre, Sirius?" Harry asked.