 However, on the road to the Grey Havens she has a vision of her future son, Eldarion, which belies her father's one-sided prophecy.She returns to Rivendell, where Elrond admits that her mortal life will have happiness as well as grief, though he stresses that Sauron's rising power means that future is growing more and more distant.Arwen convinces her father to reforge the sword Narsil for Aragorn so that he can reclaim the throne of the King.