...****, a thought just occurred to me. Can anyone find the Gaider quote in which he mentioned that humanity in Thedas was inherently corrupted somehow? A link to the context in which he said it?
(Tenuous Thought: The Primevial Blight, the Corruption that first created the Red Lyrium in the Primevial Thaig, is the inherited corruption that turns elves into Humans, and which turned the power within the Golden City into the corruptive Blight when the Magisters carried it in with them.)
I just stumbled over this thread, so please forgive me if I repeat observations while I catch up.
I'm not sure I'm fully on board with that last idea, but it's worth examining, certainly. The evidence is limited and circumstantial, but it may not be coincidence that humans are the only race that has been demonstrably able to exert direct control over blight magic.
Consider, for a moment, lyrium as the literal living blood of two primordial, pre-elvish Pantheon entities recorded in the Dalish mythology as the sun and earth. Blue lyrium, the blood of the earth. Red lyrium, that of the sun.
If memory serves, in the tale of Alger'nan in which he casts his "father" down, the sun's blood spatters the heavens, ostensibly becoming the stars. Now examine that in the context of the new codex information we have from the temple of Mythal, in which "she shook the radiance of the stars, divided them into grains of light, then stored them in a shaft of gold."
Sounds like weaponized red lyrium at this point, doesn't it?
Another elegant explanation, or perhaps just a "real world" wink from the writers: Andruil's weapon as a nuclear (hydrogen) bomb. Describing it as a golden shaft filled with the "grains" that make up stars seems leading in the extreme, to begin with. Add in the mutative effects of blight, the fact that Solas refers to blight magic as "unnatural" and "poison", and there's either
something there, or it's a pretty elaborate red herring.