Board Thread:Lore Discussion/@comment-68.45.229.57-20130720115140/@comment-15145664-20130908052354

Lord Hadron wrote: Still unclear as to how Harkon's way of enacting the prophecy differs from the Dragonborn.

Sacrificing Serana, as in killing her? I don't see how that would have an impact or an effect.

One could only put so much blood on a single arrow. The Bloodcursed Arrows the Dragonborn uses are only tipped with Vampire Blood, but not completely soaked.

We'll never know. Harkon needed to taint the bow itself, the arrows are probably needed too, but Auriel's power comes from the bow and not the arrows. Since Gelebor and Serana can make Sunhallowed Arrows and Bloodcursed Arrows respectively from regular elven arrows, it can be assumed that there's nothing particularly special about them.

The bow, on the other hand, is different. Killing Serana is required because it takes quite a bit of blood to taint a Aedric artifact like the bow. At least it should.

The WC above me said pretty much the same thing and I'm just adding to it. I hope this makes sense.