Graverobber

As you cast this spell, roll a six-sided die. Search target opponent’s graveyard for an Instant or Sorcery with mana value less than or equal to the number rolled and cast it without paying its mana cost. Madness {1}{B} (If you discard this card, discard it into exile. When you do, cast it for it’s madness cost or put it into your graveyard.)