The Wind of Change
The most Elusive Element of the four Element is the Element of Air 
When Fire and Air United in armoury like you see in a candle,As the flame ignites the candle at this moment a Chang in the atmosphere of harmony can be created if done with a intention of a prayer or meditation.
When the winds are out of control and is United with the fire Element as you see in a forest fire the devastation is endless.