This is nice if it gets maxed out. It will burn up your mana really quick though.

I had not played Jax prior to making this build. I did get destroyed by an AP jungle Jax one game, and this is what i thought of. I will possibly be back with further insight into this guy.

This guys is a born wizard killer.

Correction One- You want devourer, not runeglaive. This build has little AP.

1. Stalkers - Runeglaive
2. Tear of Goddess
3. Shoes
4. Manamune
5. Sheen
6. Merc Treads Alac
7. Trinity
8. Essence Reaver or Zephyr (Prio reaver if you have manamune filled)

Alt Runes
9x ; Blue Scaling Magic Resist
9x ; Red Attack Speed (or Hybrid Pen?)
3x ; Quint of Attack Speed
9x ; Yellow Scaling Armor

Zeyphr is a good item.

Speed is key with this jax, it is for getting to ganks and running away. The speed helps against champs with speed boost like Udyr.

Gunblade - This is a great item for jax. With so much attack speed, you can cast this very often.

Ruined King- If you want more attack speed, this is pretty good.

Frozen Heart - This is good against heavy AD teams, this jax is fragile and you can easily get picked off, even with all of Jax defensive abilities.

Black Clear- This is good if your team is having trouble taking out a tank. You can apply the stacks quick with your attack speed.

Mallet- This is good for some guaranteed slow, also nice health.

Maw- This is good for some magic resist, if you are having trouble getting smoked by some wizards. Without much bonus health, the shield is actually a very large amount of extra health.