Support Ability: Passive

Soo... I was thinking about Senna and how Marksman can be a Support and ended with idea that could work for marksman, tank or even ap.

Lets take few existing abilities and mix them together. There is Nasus that can stack his Q, Chogath that get/lose stacks based on R-kills/deaths and there is Overgrowth.

We could get passive that increases basic stats: AD, HP or AP. Those stats would be granted based on stacks from minions that died near you (Overgrowth) but you would lose stacks after killing them yourself (Support) or/and after death (Chogath).

Imagine a compassion type of champion that hate killing minions... Maybe even is a Minion himself!

When I think about it... Looks a lot like Thresh passive but without the need of collecting souls and with chance of losing stacks 🤔