-Pros
Very good laning phase
overpowered if ahead
easy to lane with
if played right is by far the best support in the game
-Cons
bad if behind
difficult to teamfight with
hard to know what to empower
no hard cc

With most damaging supports karma always takes flash and has a choice between exhaust and ignite. Exhaust is the better pick in my opinion. Only take ignite if they have a support that has sustain like soraka bard and nami as examples.

Karma is an op support right now. She has an insane laning phase witch will carry over into the mid to late game.

In the laning phase all you really need to do is get some good vision and have you and your adc poke down the opposing adc and support. When they get low enough to all in them just cast your e on your adc and all in whoever you want the kill on. Otherwise if you are getting ganked or see a gank coming just use your e or empowered e and run away.

Teamfigting is hard to play with karma but when you get it down it is simple. The basics are to EMPOWER THEN E!!!This is your most important role when teamfighting. Giving a 3-5 man shield and speed boost is very important. Otherwise depending on you build peel for your team(TANK) or poke in the backline with your q(AP).

Using empower w gives a heal to you when it is put on a champ and when it ends rooting them. Use it to heal in lane. If you really need hp you can also use it on scuttle crab or dragon/baron for health. In lane mostly use empower q and normal q to poke and obviously e to help you and your adc.

Karma can be a very good pick in almost all team comps. If your support is very confident that they can play karma well first pick her! But be aware they will probably pick zyra or braum as a counter but if your karma is confident that they can out play them then she is 1st pickable. Otherwise if your support is an ok karma player you should still pick her a lot. If your support is less confident then wait until they pick their support and if it is anyone who is not zyra or braum PICK KARMA OR ZYRA!!! Both of these picks will most likely win you the game against a less meta support!

Depending on your karma skillz she can be either the best support or a top 3 support. Either way she is very powerful right now and a great pick. Thanks for reading and have a good day!!!!!!