Usurper

Your goal is to deliver the killing blow to the
King.
If you kill the King, your life becomes 50 and
you become the new king. The previous King
is dead and the knight's job is now to protect
you.
Alt Rules: You and the King switch places.
Your life total goes to 50, and the previous
King remains in the game as the new
Usurper at 1 life.