Constructive Criticism:

1) I'm not quite sure about your runes, as those attack speed marks and quints imply that you're auto-attacking quite a lot early game. However, they do mean you don't have to buy attack speed late game. Which is why I'm wondering why you have Nashor's Tooth in your item purchase considering you have heaps of attack speed with Guinsoo's, and Trinity AND runes.

I have no problem with Nashor's on Jax, and I'm really tired so I'm not going to do the math, but do you cap max attack speed with those items, runes and mastery points?

2) Normally I'd say something here about your mastery tree allocation, but I can see that 9/21/0 is perfectly fine for Jax. He ult isn't game changing, it only increases his damage ^^

3) Okay, woooooah. You're going to have to read my first post again. In it the community has detailed what a good guide should have. Colour, coding, images, formatting. You need colour, you need to use the coding to change things up, like this Doran's Ring. You need formatting - bold font, coloured font, centred text. Your guide is fine information wise, but it is extremely unaesthetically pleasing.

4) Try not to leetspeak in your guide. Take the time to write "you" instead of "u".

5) In your Runes section you could list an alternative set of runes, like AD Quints, ArmPen Marks?

6) In your items section, you should list some situational items. What other items can you build as Jax?

7) I would recommend turing "comment to vote" on so people can't downvote it without commenting. Also, if Jax isn't free this week, I'd suggest archiving your guide and re-releasing it when a free Jax week comes around so your guide gets more publicity.

8) You have no gameplay section, no section that explains your skill order, or your skills. Your guide is pretty lacklustre in terms of information about Jax, aesthetics and it really needs a lot of work for it to be a good guide on MobaFire.

fail build!

very nice build. cant wait to try it :)