Restorative Waves is a passive Restorationshaman ability that directly improves the shaman's healing output.
Notes[]
In addition to increasing the effect of 'conventional' healing spells like [Chain Heal] and [Earth Shield], Purification also has some less obvious applications, although some of these might be unintentional:
The talent increases the healing done by [Ancestral Awakening], causing the secondary target to be healed for 12.5/25/37.5% of the initial heal, rather than 10/20/30%. This is in addition to the 25% that the initial heal was increased by.
While it is not a shaman spell, [Lifeblood] still benefits from Purification.
Patch 6.1.0 (2015-02-24): Now increases all healing done by 40% (up from 30%).
Patch 6.0.2 (2014-10-14): Renamed from [Purification]. No longer causes heals to increase allies' maximum health by 10% of the amount healed. Tooltip reworded.
Now increases the healing done by Healing Rain by 100% in addition to the ability's current effects.
Ancestral Vigor now has a duration of 30 seconds (up from 15 seconds).
Hotfix (2011-02-16):Purification now grants a 25% bonus to healing effects, up from 10%.
Patch 5.0.4 (2012-08-28): The [Ancestral Vigor] effect has been moved from [Ancestral Healing] to Purification: Heals you cast increase allies' maximum health by 10% of the amount healed, up to a maximum of 10% of their health.
Patch 4.0.1 (2010-10-12): Now a passive specialization for restoration shaman, reducing cast time of Healing Wave and Greater Healing Wave by 1 sec in addition to the current effect.
[Chain Heal] and 
[Earth Shield], Purification also has some less obvious applications, although some of these might be unintentional:
[Ancestral Awakening], causing the secondary target to be healed for 12.5/25/37.5% of the initial heal, rather than 10/20/30%. This is in addition to the 25% that the initial heal was increased by.
[Lifeblood] still benefits from Purification.
