Some questions about Karma
So... as i saw this girl on the free week i tried to give her a shot, played some games with her and found pretty decent success. I'have played her bot-lane support so far, but looking at her ratios and kit she seems to work just fine mid-lane. I had tons of fun playing her, which is the most important thing. A fast glare at her statistics show, that she is barely played, almost never banned, while having reasonable win-rate, Anyways - the questions:
- What build would you suggest on her at both mid and supp? I mean items, as well as runes and masteries.
- In which matchups is she good, who are her counters and are there any champions what she counters well? Also would love some skill-order/build tips, depending on the matchup. (again both mid and bot). Which champions does she synergies well with?
- Some gameplay tips would be very useful as well.
Thank you very much for taking your time to read and answer. Happy holidays!
and maybe 
depending if you need more damage, some mana regen or some defensive item.
so that you can keep your damage relevant. 
are great picks for reducing enemy MR, but I would grab 
if the enemy team is tank heavy because it procs very frequently.
for the extra spam. I don't think it's necessary, though.
is really great on her. The rest I usually go with other support items since, like you said, her base stats are good enough. Windseeker's Blessing (I forgot if this is what its called lol) is a must-have on her if you're thinking primarily of supporting your team (meaning you're almost always going to mantra her shield no matter what). Otherwise, I think you can experiment with any offensive mastery for her. She's a fun champion but I hope Riot is still looking for ways to improve her kit.