This episode about undead and spiritual monsters was sourced here!https://en.m.wikipedia.org/wiki/Revenanthttps://mythology.net/mythical-creatures/revenant/https://monster.fandom.com/wiki/Lichhttps://voltor.narod.ru/vr/vr05_03.htmhttps://en.wikipedia.org/wiki/Lichhttps://mythology.net/mythical-creatures/wraith/https://en.wikipedia.org/wiki/Jiangshi