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.
After alot of trys with alot of build and masteries with jax , i came with this OP build
This build is one of the best [ LEEERRROOOYYY ] builds for jax , empower and leap , and if you are in the middle of the fight , all you would do , is spam click W and E , easy kills , great tower nuker , you can replace rylai's Crystal Scepter with frozen mallet .
Ofc we start with guinsoo's rageblade to acompany the Ulti , and Phanton dancer afterwards for the dodge to add up on the boots , so when you leap on a target , better to be some enemy minions around to hit you , and give you free dodge , if he wanted to run even , at this point you may hate Jax , he kills fast and he dies faster , you need the Spell Vamp+ Life Steal combo , now you have the damage - the speed - the avoidance - the movement speed , you are missing the last piece , that give you slow+AD+AP+next attack , and ofc [AD&AP = HP] , and at last Rylai's or Frozen mallet , for the slow and the HP , HP from the aD or AP as I said .
If you have any questions or anything to add , and I'd be more than happy to welcome any opinions for a more OP build .
Best wishes NnLOL