Hex, Hellfire Lord

+2: Hex, Hellfire Lord deals 4 damage to target creature. If that creature would die this turn, exile instead, then you gain 4 life.
-5: Choose a player at random. Return target creature from the chosen player's graveyard onto the battlefield under your control. It gains haste.
-12: For each opponent, exile all cards from that players library. Hex, Hellfire Lord deals 3 damage to that player for each card exiled this way.