Little bit of a Lore spoiler here about Medivh so if your reading about him don't read on
Okay so I just finished the Warcraft book The Last Guardian, Khadgar, Garona and Anduin Lother just fought Medivh and his demon side, what I read was that once he was defeated Lother left and took his men to recover, Garona went missing and Khadgar stayed to bury the bodies of Medivh, Moroes and cook, after he buried the bodies he saw a trespasser on the balcony before Karazhan, supposedly Medivh, they spoke for a bit and as the sun came up the being disappeared, then from what I read ( this is what confusses me) Khadgar kinda channeled Karazhans, visions, memories and power into Medivh, Medivh then transformed into a Raven and shot away.
But what I don't get was, I thought Khadgar buried all that was left of Medivh's human remains? Did the power of Karazhan and all that it held resurrect the human part of Medivh?
I'm a bit confused can somebody help?