[quote]Wasn't his soul trapped in the mask?[/quote] The mask was his anchor to the physical plane , he an sleeps with blades were technically immortal.

😂 For sure. I think the way Nezarec survives is by passively absorbing whatever energies are around him, similar to Darth Nihlus but not exactly. Nihlus I think did it actively. But I think that's why Nezarec can't truly die. He's like a black hole that eats anything. His corpse was probably feeding on the ambient darkness energies of the pyramid ship for centuries, trying to heal so he could rise again. I don't think the Void discriminates when it comes to energies because the Void is emptiness. It's possible that Nezarec has died and risen again, numerous times because of this unique ability.