In retrospect, was it actually possible for Azem to die prior to the point where they go back in time to Elpis? The ironic thing is, despite all the effort that Elidibus expended trying to kill you off, whatever time you spent with him on Elpis sounds like it was critical to Amaurot's attempts to stave off the Final Days. Even his Warrior of Light and the associated summoning magics are probably based in some measure off of Azem in Elpis. I wouldn't be at all surprised if his promise ends up dating back to that period either, given that he can't remember exactly who he swore it to.
