Aberran, the Mindsifter

Other Specter creatures you control have
deathtouch.
Whenever an ability of a Specter creature you
control causes an opponent to discard a card,
exile that card. You may cast that card this turn,
and you may spend mana as though it were mana
of any type to cast that spell.
Behold a pale horse: and his name that sat on him
was Death, and Hell followed with him.