Magical change of appearance in the lore

[Cleretic]

Not everything in the game is canon. Hildebrand for example is “as canon as you want it to be” since much of it breaks character and defies the laws of physics and logic.

But in that case, your answer for 'how canon you want it to be' can't be 'not', because there's a bunch of things that are first divulged in Hildibrand but then become important later, like Godbert Manderville and the truth about Sil'dih.