You know what's fun that you should try?

jg

it's actually pretty good, and for one reason only.

tether is now castable on jungle minions. Why is this a big deal, you might ask? it's a guaranteed 40% missing HP heal in the jungle. that gives you all the sustain and surviveability you need. it's increased root duration also helps you stop enemy jungler invades in their tracks..

when it comes to ganking Karma is also very good at that. she's got a 1-3 second root with mantra, an aoe speedboost shield with mantra, or a aoe burst skillshot with a wide hitbox when mantra is used.

her teamfight presence never falls off because you mostly focus on rooting squishies, shielding lowhealth teammates, and chunking enemy players.

a build i would suggest would be (ranger's for mana/health refund when mantra is down) generally your games won't last long enough to get to void staff or last item, but it really doesn't matter. by the time you get to liandry's you're hitting like a truck. and if you get behind you can just relegate to being a shield bot for the team. an aoe 400 hp shield is more than enough to win a teamfight most times.