"I may have killed him, but I did not disarm Dumbledore," Severus Snape explained hesitantly to the Dark Lord. "According to legend, it is the person who disarms the wielder of the wand that becomes it's new Master. Draco Malfoy was the one who disarmed him."
"But, you still killed him," Voldemort pointed out. "Therefore, there is a slight possibility that you are the new Master of the wand. However, I will keep this information in mind. Narcissa will not be pleased that you are the reason her son died."
Snape swallowed hard; remembering that the previous year was when he took the unbreakable vow to keep her son safe. He wished now that he renewed the vow; Draco was Narcissa's life, besides Lucius, and if Draco were to die, her while world would be turned upside down.
"You've been a good and faithful servant, Severus," Voldemort said. "But only I can live forever."
"My Lord-"
With a wave of the wand, Voldemort slashed Snape's throat. "Nagini, kill."