Acid Rain

In the Restoration Shaman talent tree, Acid Rain sits in the Restoration specialization talents, row 3 of 11. It is a single-point node.

Connected above

The tree draws a line into Acid Rain from Healing Rain.

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  Healing Rain

  Blanket the target area in healing rains, restoring to up to 6 allies over 18 sec. You can only have one Healing Rain active at a time.

Connected below

Acid Rain leads on to Ancestral Vigor.

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  Ancestral Vigor2 ranks

  Targets you heal with Healing Wave, Chain Heal, or Riptide's initial heal gain 5% increased health for 10 sec.

Same row

Also on this row: Soothing Rain, Ascendance or Healing Tide Totem and Water Totem Mastery.

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  Soothing Rain

  Increases the healing done by Surging Totem by 10%.

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  Ascendance

  Immediately heals for (1287.7% of Spell Power) split between allies and transforms into a Water Ascendant for 15 sec. While ascended, Chain Heal jumps to 3 additional allies with 10% healing reduced for all jumps, Healing Wave always critical heals and heals 1 additional allies at 50% effectiveness, and the mana cost of Chain Heal and Healing Wave is reduced by 25%.

• 
  Healing Tide Totem

  Summons a totem at your feet for 10 sec, which pulses every 2 sec, healing all party or raid members for (514.5% of Spell Power). Healing reduced beyond 5 targets.

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  Water Totem Mastery

  Reduces the cooldown of Healing Stream Totem by 5 sec.