This riddle was scary! I love to be shaken up a bit : ) Watch yourself when I come near. I sneak like a step that no one can hear. In my cloak of mystery, you won't know me at all. I'll get you good when there's no help to call. I endlessly plan and plot your demise, setting the stage with treacherous lies. Will it be poison, a spell, or something worse? If you are lucky, you'll find me out first. Who am I? Answer: A Fairy Tale Villain!