Personification: "And the sad, silken, uncertain rustle of each purple curtain..."
Tone: "From my books surcease of sorrow- sorrow for the lost Lenore."
Metaphor: "'Prophet!' said I, 'thing of evil!-Prophet still, if bird or devil!'"
Allusion: "'Wretch,' I cried, 'thy God hath lent thee- by these angels he hath sent thee!'"
"On this home by horror haunted- tell me truly, I implore."
These elements help create the mood of the piece, which is sullen, by mentioning ideas like despair ("Sorrow for the lost Lenore.") and the mentioning of prophets in the raven ("Prophet still, if bird or devil!")