So I was discussing with the resto shaman of my raid and he said he would be able to heal while spec'ed elemental in a fight like wind-lord because of conductivity and chain lightning spam. I was skeptical and asked him to link the spell, the tooltip says: If your Lightning Bolt, Chain Lightning, Earth Shock, or Stormstrike damages an enemy standing in your Healing Rain, allies within the Healing Rain share healing equal to 50% of the initial damage done.
He insisted that all chain lightning damage was converted into conductivity despite the tooltip stating "initial damage done".
Is he right? Is the tooltip right? And how viable is this kind of healing?