I use this build when i go farm by my self.
This rotation is to make the most damage as possible to a large number of enemies in one place.
Use the rest of the abilities to kill the enemies and heal yourself.
by the way if you are close to the enemies and you are about to die and about to use "curse explosion" you will heal yourself if you are inside the circle that curse "explosion makes".
I use this for PvP
I use this set when I go to bosses with my guild and farm with them.