Early game he has counterplay with the barrels, but when he hits lvl 9 his barrels have almost no counterplay and they have such a devastating punishment for being hit by them, late game 1 barrel can almost one shot you.
On top of barrels doing very good aoe armor ignoring damage... they have a massive slow and he gains a massive speed boost. His ult has even more global aoe damage.
He has good mana regen and a % missing hp heal and a cleanse.
He has more gold than every champ which is a stat riot even posted, tnx to his q farm and this skill has a pretty low cooldown on top of that.
And he has a true damage dot passive plus an upgradeable ult...
THIS IS SO MUCH FOR 1 HERO.
Plus if the enemy player is good at his barrel mechanic he is almost unstoppable...