Chaos Knight In Competitive Play I'm not an experienced or knowledgeable dota player by any stretch of the imagination but I was surprised to see Chaos Knight used in competitive play.  All my instincts tell me that pro players would want to minimise the effect of chance on their strategies, and that seems to be pretty much what Chaos Knight brings to the table.  It seems logical to me that a professional team would rather rely on their skill than RNG to help them win games - I know some element of randomisation is key in DOTA, but surely taking steps to mitigate that would make more sense?

So why is Chaos Knight used in the pro scene?  Have I just not watched enough games, and he's actually a rather rare pick?  