Skullius' vision was cut off before he could see what the notification said at the end of what happened when he clashed with Guddhar in a final attempt to commandeer his mind for a brief period.
All he saw was darkness but that didn't faze him as much as the loud pounding in his mind!
Soul damage!
Through Serenity, Skullius had discovered that a part of his soul was missing and the part that he had at this moment was incomplete.
However, Serenity had neglected to tell him a rather obvious truth because she lacked the time.
A broken soul was fragile.
[Basic Evil Invasion] was a terrifying skill but in its description it warned of a penalty when the host died while their consciousness was still in it.