Omen Haven

I saw lot of pro players like Zander , Boaster etc use it a lot in their ranked games. What's the use of this smoke? Its a A sit Defense smoke in between default plant and exit of sewers.

https://imgur.com/a/tw301ho

Like my guess is they use it to isolate A main players from A sewers or any other use?

this+you can sit in it+it gives you much more room to play+ it greatly limits the enemy's pathing

stop TR from taking space behind the box
isolates the confrontation to the left side where someone could also be holding from CT/heaven
also you could spam smoke default to stop planting

attackers especially coming from A long have to clear that corner on the front right side of omen so they would have to wrap gen to clear it. it's a really good smoke

Gives site players a place to hide also gives a small cubby left of the smoke. It can also help in fast flooding on to site cause it cuts of many of the angles where attackers shoot from.