Balancing out Yasuo

At this point in the game I believe Yasuo needs to be balanced better. Giving him either stamina or mana would make it easier to manage a Yasuo on one side and harder on the other. While he uses no mana or stamina, he has a nearly unlimited combo potential. His learning curve is what makes him slightly difficult to master, but after a few runs it is not that difficult. There is almost no downside to using his abilities, unlike Garen who uses his abilities and if he's out he can be caught out easily. Yasuo's passive, dash, tornado, and no mana mixed with flash and many other combos make him an extremely unbalanced character who needs a rework, even if its as small as adding stamina or mana. I love Yasuo as a character, but in my opinion, needs a balancing act. Essentially, stamina would make him similar to his current build. However, if mana was introduced, players would almost be forced to change up the character's build to keep up with the mana demands put onto him. For example, with mana, it's nearly guaranteed that players would build essence reaver, to stack with his passive and keep up with mana, with stamina, players would most likely build similar, but would be more reluctant in using all abilities at once due to stamina costs and CDR.