I'm actually kinda proud of this one, sorta:
I'll write it up in the playthrough thread, when I put up the latest batch later today. I was watching some high-end Chinese Dota 2 tourney going on for a few hours and while it was on I was also trying to see if anything wins me this PQI, I'd just play any attempt and see how far it goes. There was one which got to one boss away, can't exactly remember what it was, I was trying out all sorts of stuff, basically whatever the RNG gave me.
This one was just Mystera with Apheelsick and B2P backup, but what won this attempt was really the Crystal Ball. I've had both the glyphs and other things on other attempts, this one was the first one that I found the ball. And it took quite a few attempts before I ran into it, I wasn't counting because I wasn't really expecting anything to win it (although I have heard stories of unexpected NC Purist wins with random stuff before).
Wasn't scumming for anything really, which turned out to be a good thing, because I surely wouldn't have been scumming for this if I was.