Rhandum, Chaos Bringer

+1: Shuffle your hand into your library and draw the same number of cards. Discard one card at random.
-2: Shuffle your library and reveal the top card. If it is a spell, you may cast it without paying its mana cost. If it is not, shuffle your library.
-7: Gain control of all of target player's permanents and that player gains control of all of your permanents.