Plague Nemesis

Flying, death touch, menace {Bp}{bp}: Exile a permanent from your hand or graveyard, you may search each opponent’s library and exile a card that shares a type with the card you exiled. {X}: You may put target permanent from exile with mana value less than or equal to {x} onto the battlefield under your control. If it would be destroyed, exile it instead. You may cast Daarkon, Plague Nemesis from your graveyard.