Jarvan IV

Pure Cataclysm

Lane harassment and consistent damage output.

Burst damage and target access

Electrocute

Hitting a champion with 3 separate attacks or abilities in 3s deals bonus adaptive damage.
Sudden Impact

Damaging basic attacks and abilities deal bonus true damage to enemy champions after using a dash, leap, blink, teleport, or when leaving stealth.
Eyeball Collection

Collect eyeballs for champion takedowns. Gain permanent AD or AP, adaptive for each eyeball plus bonus upon collection completion.
Relentless Hunter

Unique takedowns grant permanent out of combat MS.

Improved attacks and sustained damage

Triumph

Takedowns restore 5% of your missing health and grant an additional 20 gold.
Legend: Alacrity

Takedowns on enemies grant permanent Attack Speed.

Jarvan makes excellent use of Electrocute in all scenarios as his **[W]** count as a hit ability, so a basic combo at level 3 procs it.

Both Jarvan's **[E] + [Q]** combo and **[R]** proc the bonus lethality for more kill potential.

Placing pinks and clearing wards is key to any successful Jungler, so why not earn some AD in the process?

Getting around the map to join fights and match roams is important as any Jungler.

The bonus healing from Triumph allows you to dive the backline for the quick assassination kill and survive with enough health to get out.

More Attack Speed means a faster and healthier jungle clear resulting in earlier and more often ganks.