So when i first got to the cidadel of odrosal and clearing out the place from daedra, i go to the one of the room with the artifact keening floating above some ash and retrieving it. Now i know trying to equip the Keening will kill you without the Wraithguard equip, but I'm curious how this artifact would even kill me so i try to equip it. What a surprise it killed me. Fortunately i already quicksave before taking the artifact itself. But somehow after i quickload the Keening just disappeared from the ash nowhere to be seen. (I'm playing purely vanilla no mods at all).