Long story short, with Triforce losing its AP/half its attack speed + costing even more and Botrk losing a quarter of its on-hit damage, Jax will likely be left in the dust. He's proven to be a delicate champion to balance in the past, so changes like this could easily "break" the character to speak. Not to mention he's only decent at best right now anyway, so any nerf is very much unneeded.
Psykoh1 votesguinsoos that is all
BetaXP2 votesI could be wrong, but it doesn't seem good enough at all to make up for Botrk or Triforce, and building three damage items is very situational and not frequent.
Reaper Review1 votesI'm curious if Gunblade + Rageblade + that Deathfire Touch keystone would be effective at all. Probably not, but it sounds fun on paper.
BetaXP1 votesIt sounds fun, but not something I'd jump on the ranked train with, if that makes sense.
magic pole1 voteslet's just make a new item.
Lamppost
Passive: only 
can purchase Lamppost
Passive: at level 18, Jax can not lose 1v1 to any champion in the game. If he is killed by a champion 1v1, he immediately respawns and they immediately die
Passive: Jax kills turrets in 1 auto attack
Passive: Jax kills enemy nexus in 1 auto attack
Passive: if Jax is 1v5'd, Jax becomes invulnerable until the enemy team is aced
Marthian1 votestriforce also got 10 cdr, which Jax scales pretty well with in my experience.