Thoughts on Rengar support

So I played around with Rengar as a support last season when me and my roommate duo queued and i would always start Red Pot + 3 potions and look to snowball, usually successfully. From there I would continue to feed or get fed depending on how lane went. My problem this season is that with the removal of Red Pot, I'm not sure what to start in order to snowball my lane as more than 2 dorans blades sets me back in my build to th point i can't get the core items I need to pick people of in the mid game. I know that Rengar isn't a meta support and it may seem troll but I'm looking for some new way to play erryone's favorite knifecat. So please just post a theory that I can try with friends and break this horrible state known as "The Meta"

Edit 1: I should probably mention the fact that I would never do this in Solo Queue and only if I was in voice contact with my lane partner. Like I said before I did this with my roommate before so we were sitting like 5 feet away from eachother and had a pretty easy time communicating when I was going aggro and how to deal with the situation as it developed.