(Early Game)In the begging u should always try to invade or better trap enemy team,its so easy to get fb cos of your passive and your early Q dmg, a great idea is to ward an enemy buff so that u can see if the enemy jungler will start from this buff and have the time to steal his other buffROUTEBlue fast SmiteEnemy Red(dont kills wolves)One of your camps and then yourRed u know this route depends on where the enemy jungler will start!!After this stay until u make 2 or 3 parts of the Lizard item and go back.Then start ganks its pretty easy to gank cos Jarvan has great engage but dont waste your time in the bush and make up your mind before u decide to gank!

(Mid Game)You should make some items and be able to gank and dive freely enough you must always farm at jungle but dont forget to help your teammates cosGanks>Farming.You should always have the timer or buffs/dragon and baron and make the right calls...

(Late Game)In the late game there is not something special that u have to do but focus on objectives and help your teammates.If you make full build or like 4-5 items you can dive like a boss but dont overextent.Have a clear mind about what u have to do to win the game and justCARRY HARDDDDDDD

Pros

+Great burst
+Super Engage ability
+Can zone out enemy carries with his ultimate, and knock-up
+Escape skill (E-Q combo)
+Bonus armor & attack speed (from skill E)
+Easy to snowball


Cons

-Sometimes poor of mana
-Kinda difficult to master him
-Poor usage of ultimate can be devastating to your own team

Pls let me know if something bothers you and your general opinion of the build thank you very much!!