Hello, this is my first post, so tell me if it needs any revising. GP is one of my mains, and this build works so well for me, in about 3 attacks, u could be able to kill someone. I'm too lazy to type anything else in the intro, lets be on!

Pros: Heavy damage, Un-fairly powerful Q, Easy Harass, Constantly mumbles about booze. :3
Cons: Very Squishy, Ult is based on AP, Is not a girl (has no boobs) and there are not enough cons :/

Why so much critical strike? :o Because, his Q scales off of it. I was once against a Soraka, and as squishy as they can be, one Q and 1 basic attack shouldn't kill anyone, but it did. Your Q does bonus damage with critical hits, AND with 2 infinity edges, that is doubled. Your basic attacks are most likely all Critical hits too, and with the ad and even attack speed, You're kinda unstoppable. :3 Why boots Of swiftness? Added to your E, you WILL have un-fair movement speed, and people will rage when every hit crits. And last, the Ghostblade is kinda an early game item, if you find that it's not helping you, that is something I often sell lategame, though most games, you don't even get a chance to complete your build :( You can also get the Bloodthirster earlier if you need better sustain, but that can also be replaced with other items, such as the Frozen Mallet,maybe Hextech gunblade, or Black Cleaver. (Ionic spark also works :D)

I only got ghost because it fits the masteries with ignite. If you don't want that, Flash or heal or maybe Exhaust can work too. Nothing more to say here.

I hope you enjoy seeing enemy health fly down with one Q, Like this, and remember this is my first post, I will try and make more, and if this works, I'll accept friend requests over LOL. Peace out :3