Zyreph, King of the Damned

You have, "At the beginning of your upkeep, or whenever an opponent becomes announced (this excludes your knight), you may lose 2 life and
draw a card." and "{2}: Put target creature card
from a graveyard onto the battlefield under your control. You lose life equal to its mana value.
You may use this ability once per game. You may use this ability an additional time for each announced knight."