I am a healer, my role is to keep the tank and the dps players alive.
The first skill i use is the Regrowth spell. Then, when the target has less that half health i use the Swiftmend spell. However, if the target has almost full health i use Rejuvenation. The last skill i use is Nature's Swiftness, i rarely use it because none player gets less than 20% health.