General DiscussionNight stalker and healing

I was watching this match and didn't understand the commentary. I think it was purge as commentator, don't remember, but they kept saying stuff about how night stalker counters their push because they can't heal bristle and bristle needs to go in and hit the t3 and get healed back up. I really didn't get what they were referencing at all cus I know of nothing ns does to counter healing, only limit vision.

https://www.dotabuff.com/matches/3137360770

I think it was on this video but a few of them are messed up on twitch right now.

https://www.twitch.tv/videos/137751002