This is telluric currents. When a resto shaman lightning bolts something he gets much more mana back than it cost to cast the lightning bolt.
I read before that you guys realize that sometimes in a healers duties, the best choice is to do nothing, to save mana if healing is not needed atm.
This talent always gives resto shaman something to do, and I think its a great idea.
But why are resto shaman the only healers with this option? druids get free wrath(no mana gain), priests get smite healing ( which is still not viable, no mana gain ) Pallys get reduced exorcism cost ( no mana gain )
Is this intended?