the last thing i heard that could prove useful is that some viking sects used to believe that when a warrior falls his soul guides the sword of their first born son and cannot be released to valhalla until it has had it's fair share of battles.

She appears in several games, I do not know much, but I heard rumors that Soul Calibur, Soul Blade, and remember that some users Darksiders.

It's a sword from soulcalibur game I believe.

Very interesting, but I am not quite sure what is going on to be honest.