Hextech and Finish Boots
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.
As Jax being my main champion in the jungle, here is a guide of how to be the split and teamfight god. This build makes you very vulnerable to cc to try not to rush in 1v5. You will melt through dragon like butter and if you have a tank, you can 2v1 baron together because this build brings crazy damage to the table.
BUT WHY DONT YOU TAKE THUNDERLORDS!!??!?!?!
The reason I take grasp of the undying instead of thunderlords is that thunderlords has a 20 second cooldown. You arent going to proc it more than once in a fight. Grasp of the undying has a 4 second cooldown and steals percentage health, giving you more health back.