My runes are Armor penetration on marks and quintessence giving me a powerful offense when I got through my Infinity edge which will grant me ton of damage.

I got Armor seals and Magic resist Glyph which allows me to give durability in lane, and this build doesn't acquire defense mechanism because its mainly damage so for your last item it is optional if you take GA or Guardian Angel.

I went 21/6/3 Taking full offense, Improved Exhaust, armor, magic resist and reduced death timer.

This Build allows you to have greater mobility and Damage output on dealing so much critical strikes. having 2 phantom dancers and boots of swiftness helps you run into the fights and out of it. the black cleaver and infinity edge gives you a ton of damage, well you could trade of B.C for a B.T (blood thirster).

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Pros:
+ Allows you Great Mobility
+ Pure Damage Dealer
+ Enemies will have a hard time escaping or catching up with you
+ High Damage output and Flat Armor and Magic Resist

Cons
- Can be taken down easily early game if you don't know how to farm/creeping
- Can be easily burst down
- Crowd Control or CC can stop her from doing anything in team fights.

Gank at lvl 4, which will allow you to have 1 lvl of broken wings(1st ability) 2 lvls of Ki burst (2nd Ability) and 1 lvl of your valor (3rd Ability).

Why Gank at Level 4???
well because so you would have a little amount of damage and can easily destroy enemies.

Choosing of your gankables.
Teammates that have stuns or slows are going to give you high chance of killing your enemies.
Let the enemy over extend and using your abilities wisely is going to have an over whelming results.