Master Yi
Doubt is the Greatest Enemy
Lane harassment and consistent damage output.
Domination
Burst damage and target access
Dark HarvestDamaging a low health champion inflicts
adaptive damage and harvests a soul from the victim.
Sudden ImpactDamaging basic attacks and abilities deal bonus true damage to enemy champions after using a dash, leap, blink, teleport, or when leaving stealth.
- Eyeball Collection
Collect eyeballs for champion
takedowns . Gain permanent AD or AP,adaptive for each eyeball plus bonus upon collection completion. 
Relentless HunterUnique
takedowns grant permanent out of combatMS .
Precision
Improved attacks and sustained damage
TriumphTakedowns restore 5% of your missing health and grant an additional 20 gold.
Legend: AlacrityTakedowns on enemies grant permanent Attack Speed.
Adaptive Force
+9
Adaptive Force Adaptive Force
+9
Adaptive Force 
Health Scaling
+10-180 Health (based on level)
Why Dark Harvest
Master Yi's ability to massively clear the jungle and power farm to build Dark Harvest stacks makes you a late game teamfight monster if you're able to get the reset.
Why Sudden Impact
Master Yi is able to easily proc the bonus Lethality from [Q] granting you even more kill pressure.
Why Eyeball Collection
Eyeball Collection's snowballing damage potential means that if you're able to pick up a few early kills, you should be able to run away with the game.
Why Relentless Hunter
The bonus Movement Speed from Relentless Hunter is fantastic for empowering your power farming playstyle with this setup, allowing you to clear quickly and get back out on the field after a recall.
WhyTriumph
Triumph's massive mid-fight heal after a kill means you'll be resetting and proccing your Dark Harvest stacks for a crazy amount of damage output.
WhyLegend: Alacrity
Master Yi is a natural auto-attacker and the extra bit of Attack Speed from Alacrity means a faster clear for Dark Harvest stacks and massive teamfight damage.
Wuju Bladesman
Lane harassment and consistent damage output.
Precision
Improved attacks and sustained damage
ConquerorGain stacks of adaptive force when attacking enemy champions. After reaching 12 stacks, heal for a portion of damage you deal to champions.
- Triumph
Takedowns restore 5% of your missing health and grant an additional 20 gold. - Legend: Alacrity
Takedowns on enemies grant permanent Attack Speed. 
Coup de GraceDeal more damage to low health enemy champions.
Domination
Burst damage and target access
- Sudden Impact
Damaging basic attacks and abilities deal bonus true damage to enemy champions after using a dash, leap, blink, teleport, or when leaving stealth.
- Eyeball Collection
Collect eyeballs for champion
takedowns . Gain permanent AD or AP,adaptive for each eyeball plus bonus upon collection completion.
Adaptive Force
+9
Adaptive Force Adaptive Force
+9
Adaptive Force Health Scaling
+10-180 Health (based on level)
Why Conqueror
Conqueror on Master Yi empowers your ability to scale into mid-game teamfights and completely take over.
Why Triumph
The heal from Triumph after a kill lets you reset and continue hunting down your next target.
Why Legend: Alacrity
Yi's favorite stat is Attack Speed so this is rune choice is a no-brainer.
Why Coup de Grace
Because Yi is an assassin, he wants to end his target's life as quickly as possible and Coup De Grace is the go-to for that.
WhySudden Impact
Yi's **[Q]** grants him free Lethality upon arrival to provide more damage and end your target's life.
WhyEyeball Collection
Eyeball Collection allows you to snowball early kills into your massive late-game scaling to take over and solo carry.