Pros; amazing fighter,escape,damage,durable,anti-assasin,anti-marksman.
Cons; no sustain,medium cool downs.

have your tank/initiate champion start. Like malphite's ultimate. Then when you get your chance. Do it. jump on the squishy carry and stun him and kill him/her. Then run out and recover if you're low on health/manna. other wise, keep going. focus squishy and leap out to your team carry and protect them! Do what ever the heck you want as jax. you're one of the best duelists in the game currently.

You can leap+empower for maximum damage on your next leap strike!
use empowered strike and your grandmasters might's passive at the same time for more magic damage
Your counter strike can do more damage based on how much dodges it counts! up to 100% (4/4)

To last hit as jax, you Have two ways you wanna do this. 1 push. use your empowered attack and ultimate's passive to push very fast.

Or 2. freeze the lane. Don't attack minions.. until their health is like 10.