Abilities of Soraka
Spell skill priority is an important winning factor for Soraka. Understanding the abilities of Soraka in League of Legends is another. Below you can find all the relevant information on Soraka abilities. In order for item builds you should check the build for Soraka.
Passive: Salvation
Soraka runs faster towards nearby low health allies.
Starcall
A star falls from the sky at the target location dealing magic damage and slowing enemies. If an enemy champion is hit by Starcall, Soraka recovers Health.
Soraka calls down a star, dealing totaldamage magic damage and Slowing by movespeedslow*100% for slowduration seconds.
Hitting an enemy champion grants Soraka Rejuvenation, which restores totalhot Health over hotduration seconds and grants movespeedhaste*100% Move Speed decaying over the same duration.
Astral Infusion
Soraka sacrifices a portion of her own health to heal another friendly champion.
Soraka restores totalheal Health to another allied champion.
If Soraka is affected by Rejuvenation, the Health cost will be reduced by percenthealthcostrefund*100%, and the target will gain Rejuvenation for spell.sorakaq:hotduration seconds.
Equinox
Creates a zone at a location that silences all enemies inside. When the zone expires, all enemies still inside are rooted.
Soraka creates a starfield that deals totaldamage magic damage to champions. The field lingers for rootdelay seconds, Silencing enemies inside. When the zone disappears, champions inside the zone are Rooted for rootduration second(s) and take totaldamage magic damage.
Wish
Soraka fills her allies with hope, instantly restoring health to herself and all allied champions.
Soraka calls upon divine powers, restoring healingcalc Health to all allied champions, regardless of distance. Healing is increased to ampedhealing on targets below 40% Health.
FAQ on Soraka
What do you max first on Soraka?
Most Soraka pros max out 
Astral Infusion first.