Hey guys, my IGN is Haykim and i main Gangplank. At the moment i'm only level 22 but i do fairly well as Gangplank. This is my first guide and i hope it is helpful. (Please tell me if i should change anything too make this guide better :] )

Pros:

You Do a lot of damage mid to late game.
You're a ****ing Pirate.
You have great mobility thanks to raise morale and remove scurvy
You're a ****ing Pirate.
You're Ultimate can be placed anywhere on the map no matter where you are
You're a ****ing Pirate.

Cons:

You drain a lot of mana early game and will be harrassed
Who cares You're a ****ing Pirate.

This build is pretty much to maxamise the amount of damge your Parrrley will do.

Stacking Critical Damage.. nuff said.

Ok the masteries may seem a bit dodgey but they are what i use for now, if theres anything i should change please tell me.

Early game the potions will help you stay alive long enough to be able to recall and buy your Statikk Shiv, when you buy that most lane harass will stop. When you buy your Infinity Edge you will start scaring a lot of champs (including yourself) if you luckily hit some crits, when you buy the phantom dancer you won't need luck because they will most likely always hit, from then on the Bloodthirster and Ravenous Hydra just make you deal way bigger crits and refund a lot of health from them. The Zhonyas at the end will make your Ultimate and Remove Scurvy a bit more useful.

Your Parrrley is whats doing all these massive crits so you will want to level that early. Raise Morale is great for supporting others and for also giving yourself a massive damage and speed increase. If you get CCed just eat an Orange and your all K. The Ultimate doesn't do a major amount of damage but the CC does help if used with your Raise Morale too catch up to the enemy, you can also use your Ult to kill low health enemies that have escaped your teammates.

Because of Parrrley, you gain extra gold if the unit is killed with that ability, making farming gold a whole lot faster.