Executioner works only if the target is BELOW 40% of his HP.

here again prove it works Jax game(quadra)and ppl try it before comment its not your standard build but i works great for me and yea the crit runes , try nad play trynda shaco or gp with em = win<3

i mostly dont build guinsooos and no i dont die instantly and people try before comment id mostly get ionic spark frozen mallet or sunfire as last item but i dont die alot remember jax isnt a tank so dont innitiate when in 5v5...

why guinsoo's at the end if it one of jax's most important weps

Though I haven't voted myself, he goes glass cannon and has crit runes. Both are very very silly.

Umm...idk why so much downvotes :\

Firstly before anything crit runes? when u only have runes and masteries giving you crit no thanks they do very little in the jungle compared to AD marks, armour seals, whatever glyphs and AD marks. In no way can jax benefit from crit runes whatsoever instead of this.

Jax just lost his old passive which basically allowed him to build more glass cannon and have lots of health he doesn't have that anymore and your build is so squishy there is no way a jax is going to jump into the middle of a fight and not die instantly, you don't even get a rylai's which was done pre patch and it gives nice health.

On the above post about BT and deathcap i think is fine but you need tanky items i literally would suggest maybe an atmogs on jax now because of his passive nerf. I think merc treads/ninja tabi should be bought over berserkers anyday for the added resistances.

Lastly i suggest a wriggles simply because of the fact that your second blue SHOULD be going to the mid regardless and u cant keep spamming as jax so his jungling slows down slightly but its not a big issue after 6 anyway.

I suggest you try out the new jax first before making a guide this early just like i hate all the people who post new champ guides now like the sej ones.

Good luck on the guide

you're right and i do agree to not build guinsoo but i still like rabandon since it gives more AP on top of HG but trinity before bloodthirster might work when needed but mostley get fed this way and it seems to work for me so i thought to share it

about the ganking part i start out with E + WQ combo then when he almost in tower range or on the run its back from its cd and ive never had problems with this build or playstyle and ive just uploaded it cuz it works on me. =)
thnx for youre comment<3
PS: first guide ever

From my experience, Guinsoo's Rageblade dies out late game. Its damage isn't quite on par with other items, and it's cheap enough to be built early. Since you are building hybrid carry, I suggest building it much earlier. Specifically, I would put it in after you get your Cutlass and Greaves.

Also, in my opinion, Jax relies more on his attack speed than his attack damage. If you want to build hybrid, I suggest building speed first, and then build damage (both after your core, of course). For example, getting Trinity Force before your Bloodthirster increases your attack speed, gives you amazing burst, and makes you more survivable in the mid-game. Jax, in my experience, doesn't do quite so much damage as other carries, and relies on outlasting the opponent in fights.

As a general rule of thumb, hybrids should build hybrid items only. That is, stuff like Bloodthirster and Rabadon's Deathcap are not popular choices. This is because one must come before the other in a situation in which both are equally useful. Thus, the latter will not be as effective against the enemy as the former, and will not be as efficient. From the looks of things, you appear to be trying to build pure hybrid, but are also trying to integrate the best items from both AD and AP based items. For Jax, I recommend a focused hybrid build. That is, build him hybrid, but focus more on AP or AD, depending on preference. If you want an AD focus, keep the Bloodthirster and also get items such as Black Cleaver or Frozen Mallet. If you want an AP focus, keep the Deathcap, replace Trinity with Lich Bane, and get items like Nashor's Tooth or Rylai's Crystal Scepter. Either way you go, don't try to do too many things at once with specialized items. It doesn't really work. Trust me.

Finally, a note on the ganking section. Jax can't easily catch up to opponents once his Counterstrike and Leap Strike are on cooldown (both of which have comparatively long cooldowns). I think that Phreak had it right in the Champion Spotlight when he said to hold off on the approach moves until the chase begins. That way, enemy champions won't get away so easily.