Haikaru, King of Beasts

You have, "At the beginning of your upkeep, or whenever an opponent becomes announced (this excludes your knight), you may create a 1/1
green plant creature token." and "{3}: Prevent all
damage that would be dealt this turn by spells
and permanents your opponents control. You
may use this ability once per game. You may use
this ability an additional time for each announced knight."