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The core of my aura made use of schematically constructed optical distortion of its weave to create an artificial darkness down at the bottom of the warp, giving me access to near infinite source of my element, regardless of where I went. 

Obviously, there were some sort of limitations to this state stopping me from instantly becoming the absolute god of this world. Maybe there was a limit to how much aura I could source from this darkness at once? Or maybe the restrictions of this core went so far beyond my level of comprehension they would remain an illogical mystery forever?

For now, there was no way for me to tell. 

Then, there was Fay's core, which according to her own words, we both got to look at. 

And, as different as our circumstances might be, Fay's core was pretty much the same.