Hi guys,
this my first build and im not the best in the English language so please leave a comment if you think I should improve something.
Im doing this build about Karma, support Karma to be excact. I don't see many people play Karma and I think it's weird, cuz i think she's one of the most fun supports out there. Go buy and play her, you won't regret it ^^.

Karma does good damage with Heavenly Wave, so why not use it to harass, eey?
Karma's job is to help your AD carry survive in the lane, and to let him farm in peace, with is pretty easy. Most time when I play with my friend Blackwidow123 (He's the AD carry, im Karma ofc.) he has the most farm of the game, and I tell him that he's got the most farm of the game, with he replies to with the answer: our team is not so good then. But maybe, just maybe, it's because he has just a good support xD. Don't try to ks (I do this 'sometimes accidentally') in the laning phase, because it's better that the AD carry gets all the kills and farm for his/her AD gear. This doesn't mean that you see that the low health enemy champion is getting away and your AD carry can't get the kill, that you just let the enemy just get away ofc.

Pros:
- Has a AoE Heal[
- Good damage for support
- She says (most of the time) awesome stuff when she casts a spell
- Soul Shield + Mantra = good harass
- One of da best supports
- crazy sustain for your you and your team


Cons:
- Mana hungry early game when you need to heal all the time
- You need some time to understand her
- Karma doesn't realy like hard CC...
- If you aren't carefully, you can push the lane realy hard with your Q+E
- You will be sometimes focused.

Runes:
These runes give you some extra punch to harass.
Greater Seal of Replenishment You eat trough mana early, and if you don't go back to base sometimes in the mid-late game. These runes fix that a bit. You could 2 pick Greater Seal of Health.
AP gives you offense as defence.
GOLD!!! yeah, these badasses over here give you a nice gold boost.

Masteries:

Passive Inner Flame:This Passive gives you, when you're low on HP, AP. You can bait people with this easily, because of the extra AP your heal and shield is stronger.
E Heavenly Wave: This spell is a AoE damaging spell, but + Mantra yu get a AoE Heal! Is that awesome or not? This allows you to keep your team alive for a longer time. In the laning phase, don't try to heal your minions, cuz it will push your lane hardcore style. I max this spell first.
W Spirit Bond: This spell can slow an entire team! Or reverse and speed up your team if Spirit Bond is placed right. the + Mantra effect is that the speed/slow is doubled. I max this spell as last.
E Soul Shield: This isn't a normal shield. This a shield that does damage with the + Mantra effect! Use the ability on a friendly minion to harass your tower hugging enemies. If you do this in the laning phase, you will end up with a freaking pushed lane. I max this spell second.
R Mantra: This 'Ultimate' doesn't require points to improve so your normal spells level to lvl 6. Mantra gives your spells an additional effect. How more CR you have (remember that the cap is 40%) how faster a Mantra charge is ready.

Support:
With this build you will be real tanky and have an decent amount of AP + some nice cooldown reduction. Take first 2 Faerie Charm's + Sight Ward and a Mana Potion. After awhile you can choose: a Philosopher's Stone or a Mana Manipulator + Boots. Then go for a Soul Shroud if you bought the MM, if you bought the Philosopher's Stone then go for Shurelya's Battlesong. In the time that you are saving for SS or SR buy Ionian Boots of Lucidity. This is what I always do as Karma support.
Now you have some some options to fill those items slot:
Gives your whole team some defence and 8 AD (OOH YEAH!!!).
If you don't like Aegis this is a good replacement when you see you get focused. The only thing is that this item only benefits you.
I LOVE THIS ITEM!!! Makes you beefy as a cow and the AP and slow is appreciated too! Personal favorite, but it's smart to buy this only if your team lacks CC.
Same story as Banshee's.
AP, AP and again AP!!! this item gives you just a s*** load of AP.
Gives your whole team AP, and Spell Vamp. Even after the price cost got raised, it's still worth it. Buy this only when you see your team benefits of this.
If you see the enemy team buying alot of MR and your team is
excists out of 3 champions who's main damage comes of magic, Y U NO BUY IT?!!!
This item is comes in realy handy against some pesky fed AD's. you should replace it with SS/SR or buy another boots.
If you bought a Heart of Gold, you can build it in to this. Very nice for the mid-game
Tons of armor, mana CDR and an epic passive that cripples the enemy AD's. I buy this 9 of 10 times when im against heavy AD enemies.

My favorites:
Flash:This is a must for Karma cuz she can't escape a group of enemies
Exhaust:This a personal favorite, it shuts down the enemy AD carry and slows him that he can't escape(if he/she doesn't have Flash or a in build-flash).

Other options:
Clairvoyance: I always forget to use it as a support, but if you do, take it.
Heal: Well you have already an awesome heal, and I see many squishy AD carry take it, but if you like it...
Clarity: If you're going to lane with a mana eating AD and you trash away a lot mana too, take it!
Ignite: This realy helps your lane trough the early game and is late game usefull for the 50% healing reduction
Ghost: Shorter cooldown then Flash but doesn't has the insta-over-da-wall abilty
Teleport: If you want to be quick in lane again, this is your summoner spell. But as a support it's better to pick a supportive summoner spell.

NO, JUST NO!!!:
Surge: The AP is not wasted, but the AS is. you just waste a spell slot.
Revive: If you use this alot, it means your not doing well. This only helps if you die alot, and that's not a good thing.

When your Tank/Intiator initiates and he's near enemy champion's use Soul Shield + Mantra to hit almost the whole enemy team and shield him for the incoming damage. Try to use Heavenly Wave + Mantra on every champion, you do damage to the enemy team and your team get healed. Use Spirit Bond on an fleeing enemy or friendly champion. When you can, try to heal'n'shield your team. And if you are low health? NO PROBLEM!!! Her awesome passive Inner Flame gives you AP for your missing health, so just heal, and your OK to go(I don't mean by this that your full health again)!

So this is the end of my build hope you all liked it, and when you try my build out give me some feedback.
And here's SivHD's look at Karma:
Play Video

24-05-2012:
-Finished build.
25-05-2012:
-Made some minor changes and checked spelling.
26-05-2012:
-Changed item build and swapped flat HP Seals for MP5 Seals. Made the change log. Improved Summoner Spells section.
25-06-2012:
-Added Frozen Heart on the Item chapter.
26-06-2012:
-Added SivHD's Karma guide video.
28-07-2012:
-Changed the guide's name.