Early in the game your going to want to get the leapstrike in order to get enemy units and it comes in handy to escape enemies. At first you may not be able to get many kills but once you get counterstrike you will begin to do much better. It is very important that after buying the heart of gold you buy the ninja tabi so your dodge will increase.

By now you should have life steal and maybe zeal if you are lucky. Jungling isn't very necessary but if you get low on health you can. Be sure to use your four skills to your advantage as well.Before an attack it is wise to use relentless assault, empower, leap strike,then counterstrike.

In the end your Jax will be able to take on almost any foe. After buying reccomended items, you should try and get as many trinity forces as you can. This will increaseyour movement and attack speed to a point where you are a force to be reckoned with.