Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
Gangplank looks weak but with the right guide and skills you can easily own with him.
For spells always take Flash and the second u may choose whatever u want mostly I choose ignite for the extra damage u can deal in early games.
For runes take crit and physical damage runes.
With Gp u need to take it easy a while don't try to act to be the hero when ur low level wait atleast until lvl 6 before u actually go in a fight. After u got ur ulti it is easy to own people in 1 vs 1 or in teamfights ur ulti is very handy.
1 Buy a long sword and a health potion at the start.
2 Depending on the enemy u buy or ninja tabi or mercury treads.
3Finish Last whisper so u will deal more damage to tanks and other enemies.
4 Try to buy infinity edge for the damage and the critical chance to hit.
5 now U hit alot but u can use some extra speed and more crit chances so u will buy the phantom dancer.
6 For the touch of ur max damage u will the bloodthirster which u get some extra damage and lifesteal witch is handy in team and overall fights.
7 and last but not least u should have some armor. in the most games I go for guardian angel for some armor and magic resist but depending on enemy u can buy also thornmail at this stage.
I would say don't be to greedy early games with gangplank he isn't that strong early game. his first spell parreley and his second remove scurbvy will help u to get kills and survive. with parreley u are able to hit crits and at the late stage u will hit alot crits I maxed my hits to 993 with gangplank. Remove scurvy is so handy even if u got disabled on ur spells in teamfights by lets say garen u can still use remove scury and heal like 400/500 hp which helps u to survive. Raise morale will give u some extra damage and speed but when u activate it it can help u and ur teammates to get more damage in teamfights. U can also use raise morale with helping ur teammate with escaping using ur ulti and raise morale so your teammate can escape.
This month they have changed GP's ulti to a smaller area but more hits and it last longer.
Gp's ulti is really the cherry on the Pie. It can help ur friends outcuz u can cast it anywere u want. u can use it to save yourtower from minions and enemies at early games who will leave the tower whenever u use ur utli. And in teamfights it will slow the enemy for 25% who are in the area of the ulti so u have some advantages to.
Hope you guys liked my first build! sorry for bad english;p