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 have target
opponent lose 2 life and you gain 2 life." 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."