I don't Lahabrea can come back he is dead he was absorb into the eye of Nidhogg that was his end. I wonder if unsundered would cause power struggle amoung the sundered ascains for leadership
I didn't think the end between Zordark would be decide like any evil being he would still be out there no long able use the ascians he would turn his eye to temped mortal into service him
through Zenos could absorb some Lahabrea into himself or most of him into himself that remain to be seen. lahabrea and Zenos could be trap in Zenos body that would interesting twist of events