It is a well known theory that Harry Potter is one of Lord Voldemort's
Horcruxes, but what if Lord Voldemort is a Horcrux for Harry Potter's soul as well?
This theory came to me after thinking about how the final moments of book 7, with the murder of
Lord Voldemort and/or Harry Potter, would play out. This inevitably led me to
analyze the prophecy with new information from book 6.
. . . AND EITHER MUST DIE AT THE HAND OF THE OTHER FOR NEITHER CAN LIVE WHILE THE OTHER SURVIVES.
-OotP, pg. 841
Using the concept of Horcruxes, this sentence makes complete sense. If each were the
other's Horcrux, then neither of them could die if the Horcrux still lived in the other. Thus, Harry
Potter would have to sacrifice himself in order for Lord Voldemort to be vanquished and/or
Lord Voldemort would have to sacrifice himself to murder Harry Potter (unlikely huh?).
But wait, Harry Potter would have had to murder someone to create a Horcrux, right?
Let's begin with how a Horcrux is made. Professor Slughorn tells us that creating a
Horcrux requires a murder to split the soul and a spell to encase it.
Two people we know of died the night Harry Potter received that scar: James and Lily
Potter. Lord Voldemort killed James Potter while Lily made a run for it with Harry. Then, Lord
Voldemort gave Lily a choice. She did not have to die. She chose to die for Harry. Voldemort
tells Harry in GoF, pg. 646, Your mother died to defend you as a child. J. K. Rowling tells
us that this is most peculiar, as we see don't see this type of rebounding of a curse occurring with anyone else.
What occurred as a result of this sacrifice that was so unusual? First, it saved Harry
Potter from dying; second, the curse rebounded and struck Lord Voldemort; and, I think,
her death acted as though it were Harry Potter's. Lily's death created a Horcrux which split
Harry Potter's soul and Lord Voldemort accidentally received it when the curse rebounded.
One could argue that it wasnt Harry Potter who actually killed Lily, yet I think the implications
of this sacrifice may be cause to suspect that her murder did not act in the same way as others.
She died for Harry Potter.
There is also cause to believe that the necessary preparation or spell was performed as
Dumbledore expresses his concern that Voldemort was still at least one Horcrux short of his
goal when he entered your parents house with the intention of killing you (HBP, pg. 506). If
Lord Voldemort was intending to use Harry Potter's death to create a Horcrux, then the
spell would have already been prepared.
In addition, another part of the prophecy may have an alternate meaning as well.
HE [HARRY POTTER] WILL HAVE POWER THE DARK LORD KNOWS NOT.
If Voldemort is Harry Potter's Horcrux, that would definitely be to Harry Potter's advantage. Lord Voldemort could not just kill him without somehow destroying Harry's Horcrux within himself. Also, I think that James death served to create a Horcrux of Lord Voldemort that Harry Potter keeps.
I must assume that this was unintentional due to the attempted use of the Avada Kedavra
curse upon Harry Potter that night and the repeated attempted murders of Harry throughout the series.
What would be the result of this exchanging of souls? Well, I think Lord Voldemort is
going to kill Harry Potter. Then, due to the Horcrux, Harry Potter would still be alive within
Lord Voldemort. Thus, I can only hope that somehow Harry Potter will be able to extract his
half-soul from Voldemort before Voldemort is killed. Then again, I think it would be
more likely that it would be Harry Potter who sacrifices himself knowingly, so that Lord
Voldemort can be killed. I think Harry would do so out of his sense of duty to Professor
Dumbledore, to his parents, and to the wizarding world.