Currently Yasuo is my main champion, i don't play him that much in ranked games because most of time he is banned away. He has High burst of damage, but he can also be bursted down very quickly buy most of AD brusiers and assasins ( fiora,zed,khazix, talon etc.) so keep that in mind. Excellent wave clear, great farming especially after statikk shiv & infinity edge,great AOE Damage with ulti, ulti can win teamfight and game if played well. Don't be afraid of using your ulti on someone when you have low HP, because you will deal some nice damage and after using E get shield and 50% armor pen so you can do some nice damage. Take risks sometimes.

Synergy excellent with knock up champions like Malphite,Cho'Gath,Vi,Alistar,Orianna...