Hey guys,
I am a mid-tier silver player currently who loves experimenting with out-of-meta picks and in general enjoys playing things other than mainstream meta picks. I have recently come back to playing Jax, as I took a long break from playing him. He has been my main ever since I started playig, around the time in season 5 that Bard came out. My first game sucked with him. I played him top at around level 7, and wondered why he was so "useless". After I had gained more experience at the game, I locked Jax one game as a joke. My friend and I joked about how I was going to main Jax. Believe it or not, I carried that game and mained Jax for a long time afterwords. I mainly played normals at the time,and I never really played to get better, I played 100% to have fun. After abandoning him and getting into tryharding in ranked, I have been kind of a failiure until recently, when I realized my mistakes and started trying to improve. And just recently, I came up with this build for my original bro and favorite champion: Jax. I hope you enjoy this guide.

Q: Leap Strike
Provides a useful engage in combination with your E: Counter Strike, as well as making for a great escape by hopping to a ward.
W: Empower
Can be used as an auto attack reset to stack up your passive quicker. It also brings more magic damage to your kit than your ultimate alone provides, which makes building against you a nightmare.
E: Counter Strike
I love this ability and tilting people with it. This is the ability where the Jax on 3hp turns on you and destroys you if you're playing an AD champion. The ability to dodge basic attacks then stun in an AOE all in one ability is just insane. Use it wisely, and you can save yourself from some crazy scenarios.
R: Grandmaster's Might
Your ultimate would be one of the weakest in the game if it wasn't for the amazing passive. The magic damage proc every 3 hits synergizes well with your passive, and the auto attack reset on your W: Empower. It makes you very hard to build against, and gives you free damage. The active component on the ultimate used to be practically useless, but it got hugely buffed quite awhile back and went almost entirely under the radar. Always remember to make use of the active when you are about to engage, as the armor and MR can and will save your life.

Start with your E, Counter Strike, for the block and stun against your first camp.