The reason his damage are kinda low because he will be godly with
I put him support because his is not good in 1v1 and he can't farm effectively, he is good at putting enemies down to low health but not good in executing them, yeah he is a bit in the weird side.
Might be worth mentioning my inspirations are Venomancer and Sand King's passive.
Throw in some support items if you are going support.
I adjusted his W so he can farm a bit better, explode the whole wave for faster farm.
Reworked his passive so can have a slight chance of being a jungler.