Macbeth saw an opportunity to potentially not only host Duncan at his castle, but also to potentially fulfill the witches' prophecy of becoming king by taking advantage of the situation. This news planted the seed in his mind that he may need to take drastic action in order to make the witches' prophecy a reality.
She berates the servant who brought the news. "Thou'rt mad to say it." Then she gloats. "The raven himself is hoarse who croaks the fatal entrance of Duncan under my battlements."
Yes
They made Hecate angry by not letting her participate in their plans. -Macbeth.
3 witches foretold the future for MacBeth.
Lady Macbeth
Macbeth plans to consult with the witches to learn more about his fate and the potential threats to his reign after hearing about King Edward's special powers. He wants to ensure his own hold on the throne and protect himself from any possible obstacles to his rule.
The night of Duncan's murder he is spending the night at MacBeth and Lady MacBeth's castle.
"The Prince of Cumberland! That is a step on which I must fall down or else o'erleap." The idea was that the Prince of Cumberland was the heir apparent, like the Prince of Wales in England.
Macbeth plans to go to Duncan's chamber in the morning to murder him and fulfill the prophecy that he will become king.
Lady Macbeth and Macbeth plan to do this when the king is at their castle. He will be so tired after the long journey (from his castle to Macbeths`) and from the meal he will not notice anything. Lady Macbeth plans to make the guards drunk and also give them drugs (so strong it might kill them). When they kill Macbeth then they will blame the guards: she would stain them with blood and place the daggers near them. They will also use the guards daggers to kill the king.
In Act 1 of Macbeth, the witches prophesize Macbeth's rise to power, King Duncan's army wins a battle against rebels, Macbeth receives the title of Thane of Cawdor, Lady Macbeth plans Duncan's murder, and Macbeth and Lady Macbeth plot to seize the throne.
Macbeth plans to murder his friend, Banquo, and Fleance, Banquo's son, after hearing the witches' prophecies. He hires two murders to commit the act and then another to make sure it was successful. His plan was foiled because only Banquo was killed, and Fleance managed to escape. Hope this helped!