The Dark Divinity 3.0

[myahele]

Once a Primal has been manifested through the prayer of at least one individual that Primal can pretty much exists indefinitely via feeding on aether. It is only when they're defeated and go back to aether/lifestream is when they need to be re-summoned by worshipper(s). Worshippers is just a quick and easy powerboost

In other words, the sword itself is the Primal. Since nobody knows that, everyone focuses of the body it's controlling but not the sword itself. Once Odin is defeated the sword remains for then someone to wield it and the cycle continues. That's why it was sealed by Wiyu because she found out it's seacret eventually.

Aside from that, all we know is that the sword is of Othard/ Au Ra origin. Assuming that the sword has always tempered people then maybe the Original Odin possessed the echo and through that, was able to harness it's power?