Oh God Hawkgirl mirrors...I've played all of ONE. It was insane. Every other second their was a wingevade and someone diving around and a ton of whif punish. Make a mistake and eat pressure. I urge everyone to go in on this at some point. Its rushdown insanity.
I have a love/hate feeling when it comes to Grundy mirrors. They can be really fun though and they really show how much the player knows Grundy as he has good tools to get around his own BS in that matchup.