You know, I was thinking about Eluvians the other day, when a thought came to mind. What if Merrills/DalishOrigin Eluvian is actually the one that leads to the Black City? It spread the taint, did it not? And I noticed it during the scene with Morrigan in the background. Something stinks there, not a single other Eluvian spread the taint. As far as I know at least.
Thank you. People seem to be ignoring this. That and the fact that the old gods' song isn't something of the taint, but an actual signal sent from the old gods. The old gods were from the elven pantheon. The eluvians can reach the fade and one has a source on the taint, likely from the fade, even the black city itself. And these old gods are seeking said taint.
This to me shows the old gods want to be woken, and it points to the elven gods being the ones that locked up the taint in the first place, whatever or whoever it is associated with directly.
I think a good question to ask now is, what exactly links the old gods to the taint, and why can tainted creatures hear their song? Seems to point directly to the possibility that the taint, like lyrium, is something alive itself. I think it's suspicious that followers of the old gods can receive dreams from them, and all tainted creatures can hear their song, then even receive dreams from them once they too are blighted. The taint could be the essence of an old god.
Hell, even lyrium could. Of some long dead god that no longer exists, like the maker even. Would be appropriate given that templars use it for "holy" powers. Seekers also receive similar anti demon magic abilities from spirits of faith. And after all, if lyrium is a thing alive, where the hell did it come from? Where did the taint come from?
Something else to think about, is benevolent spirits normally don't seek to possess anything, but demonic spirits do. Lyrium on its own does not grow, but when tainted, it does. And the taint "possesses" and corrupts everything it touches. The taint is linked to the old gods, one of which is Dumat who has a tie to demons if we're to believe that he gave the tevinter blood magic, which they themselves believe. So in other words, red lyrium, the taint in general could be linked to an old god, one that's more demonic in nature, since even gods are just powerful spirits of a sort and thus open to the same rules, and lyrium would represent the opposite, possibly showing it's the essence of a very powerful old benevolent spirit's energy.
Maybe.
Rambling end. Whether true or not, it is suspicious that lyrium is something alive, and the taint seems to be as well, and they share some connection of some kind. Both being found in the ground possibly predating the taint found in the Black City. Confusing.