Fey Merchant
I've recently rebooted Warlords Battlecry 3, and have had a blast playing as a Fey Merchant; was wondering if this playstyle could find its way in League too.
For those unfamiliar with that game: it is an RTS, and the Fey are one of the playable races. Fey units are cheap and fast but extremely weak, so much so that you barely notice if you don't build any of them. But 20 minutes and 4000 upgrades and researches later, they become some of the strongest units in the game - while staying just as cheap and fast as they were in the beginning. (Playing as a Fey Merchant just makes them even cheaper, but your hero is literally helpless) (The standard strategy against Fey Merchants is "destroy them as soon as possible")
So... what would you think about something like this in LoL? For example, a champion so weak early that it feels like a 4v5, but that scales so insanely well that if the game gets to 40 minutes he can basically win the game by himself?
He could be the "minion champion" the boards asked for some time ago... maybe he would start the game as a plain, regular minion, but he could improve and buff (and lead?) the other minions with his skills, and end up (well into the lategame) winning by sheer buffed Super Minions spamming.
EDIT: Nasus and Veigar fit the bill of "scaling insanely well", but they are not the kind of spammy minion champion I had in mind. :P