watch 02:26 The Loop (Games) Do you like this video? Slumber is the equivalent of sleep for wraiths and is used to restore a wraith's Corpus. To Slumber, a wraith dissolves into one of his Fetters for eight hours, after which he will heal several levels of Corpus damage. Categories: Wraith: The Oblivion glossary WWWiki pages needing citation Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.