Witchcraft In Macbeth

Lady Macbeth shows a spiked interest in “metaphysical aid” which she does use later on in the play when she “calls the spirits”, she talks about witchcraft playing a big part in the future crowning of Macbeth, and displaying dramatic irony as we know she later uses witchcraft. Dark magic was a very unusual and taboo thing to use in plays in the Shakespearean era, this can create the reader to feel suspense.
In other parts of the play, ambition is presented in other ways; when Macbeth plots against Banquo. Macbeth creates lies and tells the murderers that it's Banquo's fault that their lives are ruined, "That it was he...our innocent self". This shows a much darker side to Macbeth's ambition, and shows he will kill his own best friend in fear