Monty Python Fluxx: Black Knight Expansion - Rules of Play says:
Thanks to the Black Knight Expansion, the Black Knight will finally start making an appearance in your games of Monty Python Fluxx! This Creeper is so in-your-face that NOBODY can win if he's in play...unless, of course, one of the six new Goals in the set requires him. He's joined by another oft-missed character: Tim the Enchanter! Tim causes things to explode! The ten-card pack even includes a couple of New Rules including "It's A Quest"!