 During the battle over Rabanastre at the end of the game, Vayne commands the Sky Fortress Bahamut, and when confronted by the team, uses the nethicite to become "Vayne Novus" before being mortally wounded by Vaan.Venat, however, awards Vayne for helping it by giving him the power of an Occurian, causing Vayne to become the monstrous "Undying" and grafting pieces of the Bahamut's superstructure onto his body.In the ensuing battle, Vayne is finally killed by Vaan.