Sell Doran's Ring Before getting Void Staff! To open up room in your inventory. I came up with this build after looking around at other peoples and trying different builds and this is the one I like the most but most the time I don't get to the Void staff. The last item is mostly preference.

All I know is that this 5,000 letter description thing is dumb...but anyways with this build is is good for helping your team slow and kill opponents and your charm is good for stopping people that have suppressive ultimate to get them off of teammates and help control team fights for the GG.