Pitiless Doctor

{t}: You may sacrifice a permanent. You may discard a card. You may put the top two cards of your library into your graveyard.
{t}, {b}: Exile target card from a graveyard. You
gain 1 life.
"These fools say that my methods are unethical. Utter nonsense. Is a cure for this plague not worth sacrifice? They refuse to see that each test subject is one step closer to a breakthrough."