1. You can solo Baron with a few kills in MIN 20 you just need Bloodrazor and Hextech gunblade to take it.
2. Incredible sustain. You can jump in fights oneshot a squishy target, then jump out, heal half of your max hp in 3 hits on creeps or jungle camps and then get back in the fight and clean it up.
3. Its quite tanky once you use your ultimate you are nearly as tanky as you would be if you were building full tank.
4. Rams turrets like a bulldozer.
5. Great dueling power.

-Using your W as an autoattack reset constantly combined with sheen proc from trinity force gives incredible DPS.
-When ganking:
-If enemy is pushing just walk to them start your E, attack them and wait for them to use their escape after they've used it jump on them and stun them with E.
-When jumping on enemy do NOT use your w. Save it so you can hit the enemy after the stun then use your W to reset your autoattack(Should be enough to proc Strormraider's surge so you can keep chasing after the stun is done.
-Jungling:
-Counter jungle. Most champions are weaker than Jax. Be careful with Lee sin, Elise and Shaco in those duels you need skill to win.
-When dueling enemies hold your E. Do NOT stop it forcibly unless they are running. If the enemy thinks they are stronger PRESS E JUST ONCE AND LET IT DO ITS WORK it should win you the duel most of the times.
-Again use w only as an autoattack reset.
NEVER USE W+Q UNLESS THE ENEMY IS GOING TO DIE FROM JUST THAT SINGLE HIT