Just get shadowblade and ethereal blade and hide in the trees when he chronos! Instant counter!
Haven't really seen all that many faceless voids while I've been playing at around 3k TMMR. And when we encountered him, he usually never ended up being a threat, because we ganked the 4 others into oblivion if we couldn't get him.
http://www.dotabuff.com/matches/841465136 Games like this is why I can't stop playing dota. Me and Batman making havoc everywhere on the map right after the first night, and we never stopped. SB fell off just as me and tinker started coming online.
Aghs Nightstalker is fun. Gonna download and watch the game from their pov later tonight.