I absolutely love playing Soraka because she is silently strong. It’s easy to underestimate the effect of a 2.5 Silence during a team fight, or a last minute heal. I’ll even bait enemy champions so I can use my global heal at the last second. She’s also a beast in top lane. Try a normal game out by playing ability power Soraka in top lane and max your E (infuse) and Q (Starfall) (no heal). Spam your abilities on the minions and enemy champion. Assuming you have wards to avoid a gank – you will push the lane as fast as a Mordekaiser!

You need the runes, because you will often trade auto attacks in bottom lane, it's important to run some defensive runes. You want to maximize your heals.
If you want to play aggrasiv you can take Greater Mark of Strength (+0,95 attack dmg(.

Flash:
This is the best summoner spell in the game. You will very rarely go without flash in a game. Flash provides your ability to escape, reposition, make an offensive play, a defensive play, escape over a wall, tower dive and get out ASAP, whatever. Flash is the most useful spell you can take.

Exhuaste or Heal:
If you are going to play very aggressive in bottom lane, I like taking exhuast. If you plan on a more passive lane then Heal is nice for baiting the other team into over extending or using it for additional sustain in lane.

Boots of Mobility or Ionian Boots of Lucidity.
I prefer to take the Boots of Mobility, because you can help allies faster and you can place wards much faster and safer.
Ionian Boots of Lucidity gives you 15% CD (Cooldown reduction) But with you masteries and with Shurelya's Reverie you come on 32% CD (max is 40%), also you don't need to buy Ionian Boots of Lucidity and with en Elixir of Brilliance you reach the max.
After Frozen Heart you have Max you CD.

In the earyly game you need much Gold per Sec Items, to buy wards and your Oracle, to safe the lane for Gangs.

As support you need much environment Items.
I start with Aegis of the Legion, because your passive already cooperates with it. After go for more environment Items like, WOTA (Will of the Ancients), or Abyssal Scepter.
I alwasy start with Aegis, after i take some Mage res and rush my Frozen Heart.
After you must have 5 Items, and at the last you need to buy Wards, but if an ally have Wriggle's Lantern he can ward the Baron in the Endgame.
Then you can go for GA (Guardian Angel) or more life like Rylai's Crystal Scepter, to slow the Enemys and heal more. And with GA (Guardian Angel) you can distract after you death.
IMPORTANT: Never forgett to buy Wards

You don't need to Skill You Q (Starcall)
It's better to start with W (Astral Blessing) and E (Infuse)for longer Lane sustain in bottom lane.
You can Skill you Q (Starcall) At lvl 4, but then don't skill it at lvl 7 one time.

PROS

• Great level 1 Magic Resist buff aura for team
• Long sustain in bottom lane, better than most other supports
• Can nullify an AP Caster during team fights for 3 seconds with silence
• Essential for heal composition team comps

CONS

• Very squishy
• No built in escape
• No built in crowd control
• Low damage output

Tristana, Miss Fortune: They reduce your healing on allies.