Ok Im going to keep this short and sweet.

Jax is a very strong character and is a great carry. This build is good for the entire game, as you will be putting out massive damage, and setting up team kills.

My masteries are straight forward.. 21 in offence basically for more dps ability. 9 in defense for a little magic/physical resistance, and dodge chance.

I dont think I have to go over the runes... dodge, attack, crit, etc. All basic stuff.

Jax is based off of dodging and his e is the reason why.

A good tactic is to leap on to someone, empower while your in the air (more dps), and get a quick dodge so you can stun them, then just dps, if they ghost than leap again :) I like to jump into a minion pile to attack an enemy champion because the minions will attack you, giving you a better chance at dodging..

Basically the items in this build is hybrid, start of with ninja tabi for dodge, and then a RageBlade for attack and ap. Next you will want to get Crystal Scepter, this is for the 80 ap and the extra much needed hp, the slow for your empower is just icing on the cake :D

Next grab a bloodthirster. Not much needs to be said here, attack power and lifesteal. Lichbane is your goal now, it is a very good item to get. Ap, mana, and its passive is golden for jax. *MUST HAVE ITEM*

And for your last item, just get the Hextech Gunblade. Its a fairly good item for jax. :)

THINGS TO REMEMBER:
-Get a lichbane and a Crystal Scepter
-Harass a lot with your leap strike
-Carry your team, dont be afraid to dps someone, you will most likely win
-Play smart

Thanks for reading my first ever guide guys! please leave some feedback!