What have I just seen?

It's happening to me for the first time; I would count it as an hallucination, but it felt so real. Everything felt so real, and the images still play in my head.

Could it be a vision?

Am I getting a glimpse of the future? Could it be related to the demon prince? Is this what will happen when the demon prince comes for Alaric?

"Lenora, are you okay?" As Alaric asked, his hands were firm on my arms, softly squeezing my skin. My breath steadied, and it was only then ...