The legend of the Stormhammer is one of Vosteros' oldest tales. It goes back to before the first Cataclysm and stretches past the Collision of Worlds. It is a legend that started a long time ago among the Subarii; Vosteros' most proud clan of warriors.
As time passed, the legend, as most legends do, slipped into fable and folklore, a quiant story told to children to keep them on the right path. It isn't until after the Collision that all of Vosteros is reminded that all legends originate in truth.