'twas my thought. It's like, if if fanon says blood can do all that, then it should be well capable of being used as a weapon against Voldemort.
Dumbledore: "Well y'know Harry, I was going to tell you that a prophecy said you had to fight Voldemort and track down several soul containers of his, but since he was foolish enough to resurrect with your blood, all you have to do is go down to the Madam Pomfrey's office and give her a few millimeters of blood and we should have this whole Death Eaters nonsense done and over with by afternoon tomorrow."
Harry: "Uhhhhh...sounds good to me, sir!"
Dumbledore: "Well y'know Harry, I was going to tell you that a prophecy said you had to fight Voldemort and track down several soul containers of his, but since he was foolish enough to resurrect with your blood, all you have to do is go down to the Madam Pomfrey's office and give her a few millimeters of blood and we should have this whole Death Eaters nonsense done and over with by afternoon tomorrow."
Harry: "Uhhhhh...sounds good to me, sir!"