Pros:
+ Very good early-mid harassment and awesome late game damage,
+ Enemies will not expect you to do that much damage with Starcall and Infuse,
+ Astral Blessing will heal for a lot despite not being leveled until last 4 levels,
+ Wish will save many lives in laning phase and also during team fights,
+ You can dominate mid with Starcall.

Cons:
- Your team will very often cry about you not being support (which is only partially true),
- Your team will very often underestimate you and deny solo mid/top,
- If you're duo lane you need to watch out with Starcall or you'll starve your own lane partner,
- Enemies will focus you to stop your heals,
- Very very very squishy.

3 base builds: aggressive (hit harder, heal more), defensive (be less squishy), utility (more mana, more heals).

Aggressive (21 AP @lvl 1, 48 AP @lvl 18, 8.5 MPen):
Greater Quintessence of Ability Power
Greater Mark of Magic Penetration
Greater Seal of Ability Power
Greater Glyph of Scaling Ability Power

Defensive (15 AP, 8.5 MPen, 13 MRes, 13 Armor):
Greater Quintessence of Ability Power
Greater Mark of Magic Penetration
Greater Seal of Armor
Greater Glyph of Magic Resist

Utility (15 AP, 8.5 MPen, 3.7 mana/5, 5.89% CDRed):
Greater Quintessence of Ability Power
Greater Mark of Magic Penetration
Greater Seal of Replenishment
Greater Glyph of Cooldown Reduction

Pure AD build. Mental Force and Blast will increase your base pool of AP, while Havoc , Archmage , Arcane Knowledge and Executioner strengthen every piece of stat you get from runes and items. Since main focus of this build is to make you glass cannon defensive tree will make you little bit less squishy. Trade one point in Havoc for Summoner's Wrath if you choose to use Ignite or Exhaust.



Standard Utility build that is also working amazing with Soraka. You will do less damage, but you will have more mana, money, CDRed, experience and your Summoner Spells will be available faster. No reason to swap points here. 3% spell vamp from Transmutation isn't worth it since you will have 25% from Will of the Ancients.

Base spells:
Flash - Soraka has no escape skill, so this one helps a lot,
Exhaust - great way of finishing enemy or to escape from one,

Good substitutes:
Ignite - great tool vs enemies that heal or/and have escape skills
Ghost - good for running away and to chase,
Teleport - fastest way to get back to lane if you're top/bot, also good for pushing if enemies are dead, far away or just not that good at map awareness,

Situational:
Heal - Great way to be more supportive in team fights, survive longer and escape ganks (most likely with the help of your other heals),
Surge - not only increases your damage, but also heals,
Cleanse - good vs cc enemies that tend to lock you down (lifesaver when you get your ulti locked),

Don't bother using:
Promote
Clarity
Smite
Revive

Priority:
1. Wish (R)
2. Starcall (Q)
3. Infuse (E)
4. Astral Blessing (W)

Starcall and Infuse are the most important skills. By level 10 you should have Starcall at rank 5 and Infuse on rank 3 (you could have it on rank 4 but only if you totally ignore Astral Blessing which is not recommended). Finish leveling Infuse asap and then just finish Astral Blessing.

If you find yourself struggling versus strong AD champions (at least 2 of them) then keep Infuse and Astral Blessing on par ranks.

Item String for Yaric: 3158 3152 3003 3089 3116 3100

Starting item: Meki Pendant or Sapphire Crystal. While buying Doran's Ring may seem like better choice it doubles the time you need to build Tear of the Goddess.

First trip back (1345g):
Tear of the Goddess (995g) - Thanks to this little piece you'll have enough mana for spamming Starcall and heal yourself when needed. Works great with Starcall's low CD.
Boots (350g)

Depending on how well you're doing get Hextech Revolver for AP boost and sweet Spell Vamp and upgrade boots to Ionian Boots of Lucidity if you can afford it.

As soon as you can upgrade Hextech Revolver to Will of the Ancients. It only costs 900g to upgrade but doubles AP (from 40 to 50 + 30 from aura) and increases Spell Vamp by 10% (from 15% to 25%). Best part is the aura giving allies 30 AP and 25% Spell Vamp, how supportive is that? :)

When you can upgrade Tear of the Goddess to Archangel's Staff for smashing AP boost (if you were not holding back on Starcall you should be done or close with filling the 1000 mana limit).

After Archangel's Staff you should start building Rabadon's Deathcap. If you can buy Needlessly Large Rod but if you're under 1000g just buy Blasting Wand.

Rylai's Crystal Scepter will give you decent 500hp and cause your Starcall to slow everything it hits by 15%. Oh, and there's 80 AP which we all love and care for.

You will rarely finish your 6th item, but when you do it should be Lich Bane. This item is just amazing for Soraka. Thanks to Starcall it's effect will pop on every auto attack.

Archangel's Staff subs:
- Rod of Ages - build it if you want to be more tanky. Costs a bit more, you get about 50AP less and you have less mana and doesn't give mana regen BUT with bonus 630HP you will be considerably harder to kill,
- Abyssal Mask - build it if enemy team has strong AP champs. It will help you survive longer and the aura won't hurt,
- Mejai's Soulstealer - if your team is doing great early game you may consider this. In team fight single Starcall ensures assist on every champion it hit,

Raising survivability:
- Zhonya's Hourglass/ Frozen Heart - build if enemy team has strong AD carry,
- Force of Nature/ Banshee's Veil - build if enemy team has strong AP carry,
- Guardian Angel - build if you need to quickly raise defences versus both AD and AP.

Starcall
DMG: 160 +40%AP (~800AP) = 480
CD: 1.98 sec

Astrall Blessing
Heal: 350 +45%AP (~800AP) = 710
CD: 15.8 sec

Infuse
DMG: 250 + 60%AP (~800AP) = 730
CD: 7.9 sec

Wish
Heal: 440 + 70%AP (~800AP) = 1000

Lich Bane
DMG: 908
CD: 2 sec
Soraka has base Attack Speed of 0,852% which gives her 1 attack every ~1.2 sec. Enough to fit it in 2 sec passive CD along with Starcall. Burn them alive.

Comming soon...

I'll be posting replays of this build made with LOLReplay. Great tool that I've found out only recently myself.

1) Standard Items build, Utility Rune set, Utility Mastery build, Flash & Heal spells: League Replayes


Most recent wins. Don't have looses with this build in my Match History, but I'll be sure to post some so you can judge me :P

Should you find any errors or mistypes please don't down vote me for them. Report them in comments and I'll be sure to fix them ASAP.