I've always made use of my NB as a magicka or stamina based DPS canon, and so it follows my load-out would have contained the standard skills for that purpose (whirlwind, veiled strike, etc. etc.)
I'm looking to double up on my build, i.e. invest in other skills which will let me adequately fulfill roles other than DPS. The role that appealed to me was a Healer. I've always heard of the Nightblade's healing potential, yet never done any research on it.
So I'm looking at the following skills:
Mutagen
Ward Ally
Refreshing Path
Healing Springs.
And one other utility skill (?)
The above would be my "healing bar". The other bar might contain more DPS orientated skills. My question to you: are the above skills all that are needed to make a healer? What would be better?