The Keeper of the Lake Elder primal

[treuhavik]

@ Alberel: We don't know if it is Midgardsormr in the Heavensward logo, it could just as well be Nidhogg

From 10/31/14;

And, finally, yes, Silvertear is from where the modern primals came. The Allagan used the lake to trap the weaker primals (trapping primals was kind of their thing). What's interesting here is that Midgarsormr was/is the "Keeper of the Lake", it's protector. This means it's likely that the Allagan assigned him this task using some variation of their dragon mind-controll devices.

For reference: https://www.youtube.com/watch?v=yzC510DpbU0

The way I see it, the allagan seal was literally broken when the Argius reached a certain depth and that the 'lesser' primals were really released back into the stream of aether in that moment. Now, on them being as old as the elder primals, it's a non-issue. Bahamut and Odin could still be eons older than the primals seen in that scene.