This is just a guide. If this does not work for you, don't bash. Everybody plays a different style. I will say that after most of the games people will say that was the best GP they have played against.

This is pretty simple. I just go with all critical damage runes. Now you will not do a lot of damage at the beginning of the game, but at the end of the game you will be doing a lot of damage.

For masteries I go 21 / 0 / 9. Just look at the tree.

A lot of people ask why I buy a Mekki at the start because it does not build into anything. I get this item because it allows me stay in the lane for a very long time. I eventually sell it back to the shop when I do not need it. (You only lose 150 gold.) I use attack speed shoes, but depending on what you need, buy the appropriate shoes. I start with mekki and 2 health potions. After that I buy the basic shoes. Then I go for 2 Avarice blades. After that, get your shoes. The next item is Infinity Edge. The next two items I work on are 2 phantom dancers. Then I upgrade one of the averice blades into a youmuu's-ghostblade. The next item would be a bloodthirster. If the game has gone on for a very long time, you can sell your shoes and go for another item that you think would help out the most.

Pro's
- GP is a very squishy character, you have to be smart when positioning yourself during team fights.
- A good GP can completely change the game

Cons
- Can be pretty helpless if the other team has a lot of CC.
- Good teams will always focus a GP is he is doing really well.

GP's E ability (raise morale) can be extremely useful. Use it to your advantage during the lane phase of the game. You can cause whoever you are laning against to get out leveled by everybody which in result in them not getting as many items and may cause them to get killed more later in the game if they are out-leveled.

One thing that bothers me when I see other GP's play would be that they don't use their ultimate to be useful. I only use it to save towers, team fights, and the occasional baron steal! ;p

GP is usually frowned upon because most of the time I feel he is not used to his full potential. If he is played right, he can cause so much damage and take over the game. If people build items just to negate an awesome GP, that allows your other teammates to do more damage.

I hope this guide helps out all you people really wanting to do well on GP! It is always fun to watch your opponent run in full health then get killed in two shots!