This poem is like a dream sequence. How? what does this poem suggest about the nature of evil in the universe?

This poem is pretty tripppy. You have ghost zombies, lightening storms....While it can be beautiful and frightening (often simultaneously), the natural world's power in "The Rime of the Ancient Mariner" is unquestionable. In a move typical of Romantic poets both preceding and following Coleridge, and especially typical of his colleague, William Wordsworth, Coleridge emphasizes the way in which the natural world dwarfs and asserts its awesome power over man. Especially in the 1817 text, in which Coleridge includes marginal glosses, it is clear that the spiritual world controls and utilizes the natural world. Follow the link for more,

http://www.gradesaver.com/the-rime-of-the-ancient-mariner/study-guide/major-themes/