The sinister reflection cast by the ferocious ghostly creatures that have taken up residence in the foggy expanses of the Cloister of Visions, in which a deadly aura is concentrated. Used to receive an intermediate Shadow Catchers reputation level. The Serentile is able to extract from Sinister Shadows enough energy to noticeably increase combat capabilities. Received: with low probability, upon killing Ghostly Pearly Scolopendras [13] and Ghostly Daigons [14].