Healing Rain

Healing Rain is a level 48 Restoration shaman healing spell that heals all allies in a designated area every second. It has a two second casting time, after which point the rain will remain for ten seconds. The spell has a cooldown that matches the duration, meaning that only one area of rain per shaman can be maintained.

Tips and tactics

 * The short casting time and long duration means you can cast Healing Rain and then use other healing spells while it ticks, allowing you to heal a very large amount in a fairly short time if people are clumped together. The combination of Healing Rain and Chain Heal on players who are grouped up allows for some of the most powerful healing output in the game, rivaled only by druid's Tranquility.
 * Since it's so expensive, avoid using Healing Rain if players are spread out or are likely to have to move very soon.
 * Unless you are forced to spread out for some reason, convince your party or raid members to group up, making Healing Rain more effective.

Trivia
This ability was first used by the Severed Essence when it copied a shaman player, although it was named Replenishing Rains instead of Healing Rain. The mirror image is summoned by the Val'kyr Heralds located at The Spire inside Icecrown Citadel.