World of Warcraft®

Whenever a damaging attack brings you below 30% health, your maximum health is increased by 25% for 10 sec, and your threat level towards the attacker is reduced. This effect cannot occur more often than once every 30 sec.

Summons an Air Totem with 5 health at the feet of the caster for 6 sec, granting raid members within 40 yards immunity to movement-impairing effects.

When a totem is replaced or destroyed before its duration expires naturally, its cooldown is reduced in proportion to the lost duration, up to a maximum of 50% of the full cooldown.

Your next Nature spell with a base casting time less than 10 sec. becomes an instant cast spell.

Passive:
Increases spell haste by 5% and melee haste by 10%.

When you cast Healing Wave, Greater Healing Wave, or Healing Surge, allies within your Healing Rain share healing equal to 30% of the initial healing done.

If your Lightning Bolt, Chain Lightning, Earth Shock, or Stormstrike damages an enemy, allies within your Healing Rain share healing equal to 50% of the initial damage done.