The Greystone Bastard (naming lore query)

[Tenkuu]

The first part is basically exactly what happened to Thancred, but he was driven by his own dark emotions rather than an external, extremely overwhelming primordial force whispering it and exerting influence, as Midgardsormr does to you. Look what happened to him when he pushed himself like your character does and no one stopped him.

You can be certain that Lahabrea had a more personal hand in Thancred's emotional breakdown than what we saw. After all, Thancred himself implies that he fell into an Ascian's trap, and it was during his investigation of them that his possession began to take place.