Board Thread:Lore Discussion/@comment-5632187-20130119213241/@comment-91.248.32.155-20161027224457

Oh, yes, Ornstein's soul. Not as clear as the other things, buuut... It could either be a copy or could be his actual soul. We know from Vendrick that you can actually live without your sould. We know from the Old Dragonslayer you can actually have similar souls with similar strength, much like a copy. It could also be just a part of Ornstein's original soul, much like Gwyn split his. Whatever is true, I'm sure it helped in creating Ornstein's illusion, much like we use boss souls to re-create the boss weapons.