Originally posted by TricksterPriestNot necessarily.
Regarding Entropy, only 2 beings in DC haven't been killed by it. Parallax (I'm assuming since he can make the rifts that it won't kill him, right Galan?) and Extant.
Just because Parallax/Extant could generate E-Rifts, doesn't mean they could have survived them... [Both would be utterly destroyed by Entropy].