Full AD J4
It's super scary. Been using full ad j4 on hexakill with satisfactory results.
Do it Ryan Choi style with doran's first.

But for hexakill, I start with a doran and long sword
Rush tiamat.
**Why? Faster farming and gives you another 1.0 ad nuke
Rush ghostblade.
Why? Arpen and cdr mainly and because its active is awesome. The random crits also net me a few clutches.
Get another
brut. Moar penetration for the lance and even more cdr so you can DEMACIAAAAA every minute.
Don't finish it to cleaver yet.
Get LW.
Now people must've finished their zhonyas and bruisers would have randuins/sunfires. Teach them that no armor can save them from your manliness.
Finish hydra.
It allows you to outduel a fed bruiser and adcs with the sustains.
Finish cleaver.
Why? Because at this point with all that arpen, why not? Also true damage auto attacks, passive and ult.
Get a defensive item. Either randuins, banshees or spirit visage. I mainly get visage. Why? Cdr! Also improves lifesteal on hydra!
Finally upgrade boots, get elixirs and upgrade trinkets.
Now, how do you delete people? Q-E. Make sure you hit your target with Q (q-e's knockup hitbox is larger than q's hitbox) AA once for passive proc Use tiamat active while on top of them. R. Ignite if necessary. Ghostyblades and randuins if necessary.
For better and more reliable results, ask for red buffs and pray to the rnglord for ghostblade crits
Runes: 19 arpen (arpen marks and quints) 5% cdr glyphs Hp per level/armor seals
Masteries: 21/9/0 Grabbing all ad and damage related masteries, blade weaving, dangerous game and arpen/mpen bonus. Only 2 points in Warlord.
I managed to outduel a fed jax in hexakill a couple of times with dis build who has triforce,bork,randuin,banshee and tabi, using E's damage to pop the banshee