Demonic Deal

Madness {b} (If you discard this card, discard
it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
Scry 3, then draw a card, then mill a card.
You lose 3 life.
Aurus, Valifar, and the Ravager, they all may
give you what you want, but at what price?