Prophesy {B}{B}, and two life (If you look at this card with a scry ability while it's within your library you may immediately cast it from your library for its prophesy cost.)

Erevor, the Monarch of Pain gets +X/+X where X is 13 minus your life total (minimum of +0/+0).

Whenever you pay life to cast a spell or lose life as a result of a creature you control entering the battlefield draw a card and lose one life.