According to the game he just disappears into Cyrodiil somewhere, attempts to use the amulet, and fails due to the amulet not having enough power. Then eventually the amulet makes its way back to Sancre Tor, where in 2E 852 Tiber Septim finds it after fighting the Nord-Breton alliance.
"Why settle for just stabbing your foes when you can roast them alive in a gout of arcane fire?"
[| DC Breton Sorcerer || NA PS4 || PSN: Catalyst10e |]
[| DC Dunmer Dragon Knight |]
Related question; what ever happen to his daughter?
The game never specifies what happened to her. She was empress regent for a time, and at some point Molag Kena took her form to gain access to the white-gold tower.
"Why settle for just stabbing your foes when you can roast them alive in a gout of arcane fire?"
[| DC Breton Sorcerer || NA PS4 || PSN: Catalyst10e |]
[| DC Dunmer Dragon Knight |]