Overgrowth and Gathering storm rune sound like a meme
Overgrowrh give 0,2% hp every 8 minion which sound kinda funny but is really hard to get nough stack for something decend. Example for getting something around a 4% hp i need 160 minion near to me. In a tf oriented meta this feel strange to get. I would rather see a minion reduction to 6 so for get 4% hp instead of 160 minion we need only 120. Gathering storm in the actual state is balanced but it's to slow (it give real stat only at 10 min) wich mean that scorch is too powerful because you can have it at start of the game. Actually there's a few game that's end after 40-60 min where gathering storm get consistent/powerful. Reducing from 10s to 8s with a reduction to the ad/ap to compensate.