Ok, so Ive just posted on the art thread to check to ask if all the details are correct but check out the lore in this article:
Since it was Elrar that linked the article Im saying that it is very likely canon lore.
Thats some pretty awesome stuff. Curious its suggests it was Crucia that turned the Bloodstorm on Regulos. And that the Bloodstorm has killed gods of other worlds (and that Regulos may hold their 'essence'). Im gonna have to mull over it some more.
Makes me even more curious what exactly the gods are.
Also Im curious what the 'spaces between the planes' are.