Pick a champion with a fairly healthy three camp clear.

Pick a jungle champion with some crowd control.

Pick a jungler with gap closer.

Pick a jungler with some damage.

Pick a jungler with decent jungle camp clearing speed.

A good jungler combines the following traits: Good sustain. Crowd Control. Gap closer. Good damage. If they have all of these traits they can gank practically any lane and more importantly they have options as to how they want to influence the map.

Gank
Countergank
Farm
Counterjungle

If your jungler lacks the sustain to get through three...
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