Jungler is someone who fights monsters in the areas outside of the lanes, getting experience and gold from there to let the other lanes get gold by themselves, and grabs buffs from the bigger monsters so they can attack enemies in other lanes ("ganking"), surprising them for a usually easy kill. --- http://www.gamefaqs.com/boards/960189-call-of-duty-black-ops/56954075 I called Second Chance being overused before the game even came out.
Most people don't use junglers till about lvl 20 so they have tier 3 runes, but it's a good idea try as soon as you feel comfortable doing it. --- Add me on Skype! tiamats4esgares --- League of Legends IGN: MeltedWater