So to make it fast and clear, Riot is nerfing Yasuo's E damage by a bit and adds aditional damage (20% of your AD) bonus damage to it, which means in the early will be slightly weak but in the late game it will not make any difference because what destroys you is the double crit chance and the insane damage on his Q and AA's.
Huge nerf (Kappa) Riot, gg wp.
PS : Double crit, armor pen, mobility, shield, windwall, etc remains the same.
Sweeping Blade (E)
Base damage lowered to 60/70/80/90/100 from 70/90/110/130/150]
20% Bonus AD ratio added.
[NOTE: Bonus AD ratio is not increased by multiple casts]
Good nerf, really?