This is the item build I use for Gangplank when I feel like hurting people. I mostly use this build in Normal games when I have to lane with Gangplank. You can use it in Ranked, but this item build is pretty squishy — You will have to try very hard not to be targetted.
This item build focusses on high Attack Damage and high Critical Strike Rate to make sure Gangplank’s Parrrley hits like a truck.
Ionian Boots of Lucidity
UNIQUE Passive: Reduces ability cooldowns by 15%. UNIQUE Passive: Enhanced Movement 2.
I take Ionian Boots of lucidity for the Cool Down Reduction of course. Even with a short cooldown on Parrrley, I often find its on cooldown right when I need it. But, this helps out slightly. Also, reduction on Cannon Barrage is great — more ganks and less waiting for teamfights. I usually don’t finish these until later in the item build, but you should get Boots of Speed probably on your first trip to base.
+350 Mana +7 Mana Regen per 5 sec +20 Attack Damage UNIQUE Passive: 2% of your max mana is converted to attack damage. UNIQUE Passive: Each time you attack, you gain one maximum mana (3 second cooldown.) Each time you use an ability, you gain 4 maximum mana (3 second cooldown.) Bonus caps at 1000 mana.
For this Gangplank item build, I take Manamune. I take it because I like to start with Meki Pendant, so that I can harass and last shot with Parrrley just about as much as I please. I build the Meki into Manamune because it is convenient, also, Manamune gives about 70 Attack Damage by the end of the game. I prefer to at least build Meki into Tear early so that it can start accumulating Mana stacks.
+30 Damage, +30 Ability Power, +30% Attack Speed, +15% Crit Chance, +12% Move Speed, +250 Health, +250 Mana, UNIQUE Passive: 25% chance on hit to slow the target by 35% for 2.5 seconds; on cast, your next attack deals bonus damage equal to 150% of your base attack.
Trinity Force has pretty much all the stats we need. It has decent amount of Attack Damage, Health, Attack Speed, Crit and Move Speed. Most importantly, though, the bonus 150% damage works on Parrrley which makes for some rediculously huge crit strikes. All of these things make it a great item for Gangplank.
+80 Attack Damage +25% Critical Strike UNIQUE Passive: Critical hits now deal 250% damage instead of 200%.
There isn’t much to say about Infinity Edge. It has a lot of attack damage and a lot of crit strike, and we need both of those stats.
+40 Attack Damage UNIQUE Passive: +40% Armor Penetration
If your enemies are stacking armor, Last Whisper will make sure you keep hittin’ ‘em hard. Sometimes I take this earlier than Infinity Edge. It depends on whether your enemies start getting armor early. If your shots don’t seem to be makin’ a difference, I would grab this earlier.
+60 Attack Damage +15% Lifesteal Passive: Gain an additional 1 Physical Damage and 0.25% Lifesteal per kill. Maximum of +40 Damage and 10% Lifesteal. Bonuses are lost upon death.
Games typically don’t run long enough to get to this, but for my last item I get The Bloodthirster for this item build just for the Attack Damage. At max stacks it gives you +100 Attack Damage. It also gives you 25% life leech which certainly helps at times.
Once all is said and done, Gangplank should have around 2500 HP, 2500 Mana, 430-ish Attack Damage and 30% Crit Strike Rate. His Parrrley’s can hit around 1500 on crits against 100-ish Armor characters. I have one-shotted more than a few people who didn’t get any armor items with this Gangplank build.
That’s the build in a nutshell. Get high attack damage and crit items and Parrrley them in the face. Have fun with it!