This guide will help you dominate the 3v3 field with the champion Jax, If you don't like this guide or can carry with a different build please let me know.

I like flash and ignite.
Ignite gives you more attack damage, ability power and DoT dmg.[/color]
Flash is the best get-away with jax. It helps you get close enough to your allies so you can jump to them with your Q. Or it can also help you catch enemies trying to escape.

I would build li[/color]ke this in most games. However, you might face a time when you need Armor or MR.

If you need Armor, I recommend Randuin's Omen. If you need Magic Resist, I recommend Mercurial Scimitar

If you dont like Frozen Mallet, there is 2 other opportuneties. You can either rush for the Overlord's Bloodmail or you can get a Rylai's Scepter. Both will give you a hp bonus.
If things are tough and you die alot, I recommend the Overlord's Bloodmail, but if things are good and you are ripping everyone appart without dying, you should go for the Rylais Scepter.
Frozen Mallet is the golden way that will be helpfull to you both if things are tough and if everything is going great.

Farm the lane till just about 60% over the lane. Then go to jungle minions in own/enemy jungle. If you are behind ur enemy in farm, take farm from the bot lane and jungle. (Only take the farm when you "can" by can I mean only take the farm at the right time)

To prove that this build actually works, I've focussed on playing jax 2 games with just using this build.

This is the proof that the 3v3 build works:

If you click the picture it will show my friend that he reached challenger with my build. This build has been approved by TheTwistedTreeline.com and 3v3.gg (NOTE: This build may not help you become better and get to challenger in ranked, only if you know how jax is supposed to be played i can guarantee u will see results)