The Witches are probably the main component for MacBeth working as a tragedy. They are the main reason that MacBeth began having  a blood thirsty ambition to become king, they instilled a seed into Macbeth and they basically played as a puppeteer in Macbeths life throughout the play. It is shown how their importance is noted since MacBeth returns to them to receive another prophecy. At this point, Macbeth is driven by fear and his rationally is practically gone. He was once know as a barbaric soldier and now is in the palms of the witches. If it weren’t for them then Macbeth would have patiently waited for his turn as king.