Saint-14 may not be completely dead. [i]Now and then someone tries to get Zavala, Shaxx, and Saladin to sit down for dinner and sort out their differences, but they remain as awkward and as stubborn as Saint-14's skull.[/i] now a word about the vex there the liquid is their brain and living tissue which is why Kabr went insane after drinking of the vex. they fighting extinction which is why the dabble in space time in order to become part of eternity. The reason you can be killed by green or common weapons in crucible is that lord shaxx fixes the fights. (Too lazy to pull up the grimoire but it's in city age 2 I think)