Hi! I'm sweepberry and playing on Philippines server for almost (more or less) a year. I started playing on Feb 2016. Not much a heavy player but I do once at home. I just want put my Lulu build here, just to know and surprised that my build is quite used and related to other players. Well not much back home since many disgust and laugh this build as Jungling Lulu. Tho I solo Dragons early game with her.

I'm a support main and I happened to play Kog'maw's glass-cannon for his LOL-ing fire rate. (I even bring it into Kyle) But then the patch came that changed Kog'maw fun factor (for me), I stopped playing him and stick to my main support. I'm a Soraka main btw, tho she's also been modified in terms of her item cores on my main build twice. Well that's another story.

I did had those times supporting isn't going smoothly since my support items been changed drastically and start looking for another path to lighten up. I do still play support and I wanna try ADR to loosen up yet I suck orz. Once played Lulu when one funny thing happened our bottom AD went Awol so then I play AD lulu the first time. And there I found out she's quite rounded especially her Whimsy and Pix, Faerie Companion abilities excited me.
And that reminds me of Kog'Maw's frenzy and so there I came to test her out and later confirmed her to be fun!

This Jungle Lulu was on its 3rd revision since I played AD Lulu. This inspired mo so after seeing a Jungle Bloodrazor Master Yi and started liking to go further rambo build. Now a Gun-staff Lulu was born! (Well originally called her Machine Gun Lulu yet its already used by other user).

PS. Don't be mistaken, Gun-staff Lulu was already my other name for her. It was derived and inspired from one of my favorite LN "Knight's and Magic", soon to be anime this July.

The Top/Lane Lulu is no other different to Jungle Path, here to say it's the predecessor. Other than Skirmisher's Sabre - Bloodrazor, both are closely related to AD marksman build, both with my fave item cores: With a "Glass-cannon" build takes a high risk. But with Lulu's cc abilities, her survival increases and transform as a "Tampered Glass-cannon". And with addition of kiting and some brood-tactics, opponents may find her quite annoying.

Warlord's Bloodlust Warlord's Bloodlust : Is the one I prefer most with Jungle Lulu path because of its energized healing and mostly compatible with Rapid Firecannon's effects. So you won't problem most of your Hp and just focus on hitting enemies.

Fervor of Battle Fervor of Battle : Is one of my first option to go when you go Laning and focusing on kiting the opponent. Good AD/AS boost gain but it requires more engagement for the buffs to last, may find hard against a careful enemy. With this you may require Life steal items to last longer in head on clash.

Thunderlord's Decree Thunderlord's Decree : Gives you an early bonus damage of lightning harassing your opponent. Along with Fervor of Battle , it also requires HP securing items to last more in battle. It has long cooldown at start, so kiting requires more attention not wasting it on a minion far from your target.

PROS

• Fast farming vs neutral monsters.
• Easy dragon hunt in seconds, mid-late game.
• Well balanced both offense and defense.
• Lane sweeper vs massive minion mobs.
• Wide map control.
• Quick buff/debuff for allies and foes.
• HIGH crit burst/damage output.

Cons

• Squishy early game.
• May require Hard leash early.
• Slow farm on post- Skirmisher's Sabre.
• Low gank probabillity if out-farmed.
• Requires item builds to excell battle efficiency.
• One word: Glass Cannon; Kiting is advised on long battles.
• May require support vs hard multiple enemies.

Hunter's Talisman - In case you lack of allies to do a good leash for you. Lasts more in jungle early game.
Hunter's Machete - If there's a hard leash ally with you.
Refillable Potion - saves gold from buying pots everytime.
Skirmisher's Sabre - for Challenging Smite, the mark debuff, true damage for 3 seconds and 20% damage reduction.
Corrupting Potion - attacks burn enemies, suited for ganks.
Hunter's Potion - stays longer in jungle.
Mobility Boots - It's my personal choice, most for map-control utility, intercepting running enemies or initiating ganks.
Berserker's Greaves - If prefered more attack speed early on.
Skirmisher's Sabre - Bloodrazor upgrade for 50% AS.
Statikk Shiv - +AS,crit,+MS and charged attacks.
Rapid Firecannon - +AS,crit,+MS,energized attacks, plus bonus range.
Infinity Edge - crit BURST!!
Blade of the Ruined King - For 8% damage, life steal, and if not going Smite.
Runaan's Hurricane - +AS,crit,+MS,for PVE.
Guinsoo's Rageblade - damage,on-hit effects, PVE.
Trinity Force - damage,+MS,+AS, spellblade.
Phantom Dancer - +AS,crit,+MS,and lament passive: best with Challenging Smite
Lord Dominik's Regards - armor penetrations, damage vs harden tanks.
Bloodthirster - in case of need more life and shield.
talisman of ascension - Gold! and more gold! Good early start on lane, mana coins will make cc abilities even more annoying for enemmies.

Will improve thread once I find things needed for better presentation.
(And credits to all unnamed guide posts about making a guide.)