MagiusNecros
Gilgamesh Fan Annoyance
Not sure. It's convoluted. There is also the 7th Siren to think about Nyriad mentions. And that it should never be found. I'd like to think that it's likely Eridian in origin and is framed as a warning more then anything else.Not according to Nyriad's Eridian Slabs in BL3 (specifically "Knotted" and "Burden"). The powers never change. That's how she's an ancient Phaseleech and yet we have Tyreen in BL3 who has the exact same powers as her literal eons later, and Tyreen's inheritance of them was completely random based on Typhon's logs.
I think it's clear that Vex is based on being an Empath(animals, clones) and has nothing to do with Phaseleech if we are to assume Siren powers are fixed.
Which would mean that we have
Lilith
Tannis
Amara
Ava
Vex
Phaseleech Successor
7th
Unless they plan on the 6th VH being a Phaseleech Siren it brings up the question of who was the Siren that died that gave Vex her latent abilities.