Dark Magical Circle

At the beginning of your upkeep, look at the top three cards of your library. You may reveal a "Dark Magician" creature or a noncreature, nonland card that is a Magician card from among them and put it into your hand. Put the remaining cards on top of your library in any order. If a "Dark Magician" creature would enter the battlefield under your control, if you cast it from your hand, target one nonland card on the battlefield and exile it.