is very strong champion because of his fast cooldown spells and great early/mid/late game damage.He has many combo which I'll tell you later.



Yasuo is a man of resolve, an agile swordsman who wields the wind itself to cut down his foes. This once-proud warrior has been disgraced by a false accusation and forced into a desperate fight for survival. With the world turned against him, he will do everything in his power to bring the guilty to justice and restore his honor.

Formerly a brilliant pupil at a renowned Ionian sword school, Yasuo was the only student in a generation to master the legendary wind technique. Many believed he was destined to become a great hero. However, his fate was changed forever when Noxus invaded. Yasuo was charged with guarding an Ionian Elder, but, foolishly believing his blade alone could make the difference, he left his post to join the fray. By the time he returned, the Elder had been slain.

Disgraced, Yasuo willingly turned himself in, prepared to pay for his failure with his life. He was shocked, however, to find himself accused not just of dereliction, but of the murder itself. Though confused and racked with guilt, he knew the assassin would go unpunished if he did not act. Yasuo raised his sword against the school and fought his way free, knowing his treason would turn all of Ionia against him. Left truly alone for the first time in his life, he set out to find the Elder's real killer.

Yasuo spent the next several years wandering the land, seeking any clue that might lead him to the murderer. All the while, he was relentlessly hunted by his former allies, continually forced to fight or die. His mission drove him ever forward, until he was tracked down by the one foe he dreaded most - his own brother, Yone.

Bound by a common code of honor, the two warriors bowed and drew their swords. Silently they circled one another under the moonlight. When they finally charged forward, Yone was no match for Yasuo; with a single flash of steel he cut his brother down. Yasuo dropped his weapon and rushed to Yone's side.

Overcome with emotion, he demanded to know how his own kin could think him guilty. Yone spoke: ''The Elder was killed by a wind technique. Who else could it be?'' Understanding swept over Yasuo as he suddenly realized why he had been accused. He professed his innocence once more and begged his brother's forgiveness. Tears streamed down Yasuo's face as his brother passed in his arms.

Yasuo buried Yone under the rising sun, but could take no time to mourn. Others would be after him before long. His brother's revelation had given Yasuo newfound purpose; he now had the clue that would lead to the true killer. Swearing an oath, he gathered his belongings and, with one last look at Yone's grave, set out with the wind at his back.

''The story of a sword is inked in blood.''
-- Yasuo

This is a very good runes for Yasuo it will give u a nice early game damage and sustain from early harass.

Why i max w after q you'll ask because you need to full your passive Way of the Wandererwith your Sweeping Blade to gain shild sooner.

• Way of the Wanderer Yasuo's critical strike chance is doubled. Additionally, Yasuo builds toward a shield whenever he is moving. The shield triggers when he takes damage from a champion or monster.
  
  
  
• Steel TempestA skillshot basic attack. After two successful Steel Tempests, the next fires a tornado that knocks enemies Airborne.teel Tempest is treated as a basic attack: It can critically strike, applies on-hit effects, and its cooldown and cast time are reduced by attack speed.If cast while dashing, Steel Tempest will strike as a circle.
  
  
  
  
• Wind Wall Creates a moving wall that blocks enemy projectiles.
  
  
  
  
• Sweeping BladeDashes through a unit, dealing escalating magic damage with each cast.Each cast increases your next dash's base damage by 25%, up to 100%.Cannot be re-cast on the same enemy
  
  
  
  
• Last Breath Moves to a unit and strikes them repeatedly for heavy damage. Can only be cast on Airborne targets.For 15 seconds, Yasuo gains 50% Bonus Armor Penetration - this effects armor from items, buffs, runes and masteries. Play Video

Starting Items

This items will help you to sustain early harassment and will give you good damage to make first blood if you have enough skills.

Early game

in early game if you will have enough farm you will be able to by this items Tiamatwill give you aoe damage. Boots will give you enough movement speed to catch up to your enemies, Cloak of Agility will give you early critical.

Mid game

Phantom Dancerwith this item you will move through units + you'll have 60% critical chance and good ats. Ravenous Hydra will grand you damage and life steel which will help you a lot

Late game

Infinity Edge will give you 100% crit with Phantom Dancerthis is a huge number for damage.
Bloodthirsterwill give you 100 damage and 18% life steel if stacked so in the late game
you'll make tons of damage.
Mercurial Scimitar will save you from stuns and make you able to harass at late stage of the game.

Lets Talk about Spell Combos 1 Combo is quick harassing You rush on the mag minion with your Sweeping Blade after you closed a gap to your enemy u use Steel Tempest on the mag minion which is not marked and you will go in safe place this Combo will harass enemy into fleeing out of lane which will grand you an apportunity against your enemy.



Another combo is called ALL-IN after reaching 6lvl you do this kind of thing cast 1-st Steel Tempest on minion closer to you after rush on enemy champion with Sweeping Blade+quick Steel Tempest which will cause you to spin for 1 sec then use Steel Tempest third time to knock back your enemy and then use Last Breath if target wont die use Steel Tempest again and it will die for 100%

Pros

• good damage
• high mobility
• good surviving skills
• easy farming
  
  
  
  

  Cons

  
  • hard to master
  • always focused
  • item dependent

Yasuos friends are those who can knock-up enemies.
For example:
he can knock up enemies with his ultimate Unstoppable Force
with his massive knock-ups

Remember every champion with knock-up is friend