Vi
Ask Questions Later
Lane harassment and consistent damage output.
Domination
Burst damage and target access
ElectrocuteHitting a champion with 3 separate attacks or abilities in 3s deals bonus
adaptive damage .
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 Electrocute
The extra bit of burst damage from Electrocute allows you to quickly execute enemy champions with your [R]->[Q]->[E] combo.
Why Sudden Impact
The bonus Lethality gained from casting [Q] and [R] provides even more damage when hunting an enemy champion.
Why Eyeball Collection
Eyeball Collection is a solid choice here for increasing your damage. Because you're playing a very assassin-heavy build/playstyle, you want to get ahead and snowball the game
Why Relentless Hunter
Relentless Hunter lets you zoom around the map to find fights and kills and the drop of a hat. If you're opting to build Lethality active items, Ingenious Hunter can be good here to use those actives more often and sweep more wards.
WhyTriumph
Triumph's extra burst of healing on kills/assists allows you to play aggressively by diving the back-line, killing your target, and getting out safely thanks to the extra bit of health back.
WhyLegend: Alacrity
The bonus attack speed from Alacrity means a faster and healthier jungle clear.