Mayhem, the Manipulator

+1: Look at the top two cards of your library. Put one of them into your hand and the other on the bottom of your library
-2: You may exile target instant or sorcery from your graveyard. If you do, you may cast it this turn. Then, exile it. Draw a card.
-7: You get an emblem with "You have no maximum hand size" and "Whenever you cast a card from exile, draw a card."