Honestly, I find that Azure Fang is a very versatile class. For Arena, I run Shark, Water Clone, Neurotoxin and Standard Attack Healing just for a bit of recovery there. For normal, I run Healing Tips with Standard Attack Heal and Mystery Healing, as well as the Water Clone.
My Ninjutsu's high enough that I heal a crapload all the time, and it makes it hard to face me. The Mystery Healing is my answer to Midnight Blades who use the Chidori Blade move or whatnot that paralyzes the whole team - unfortunately, they're predictable, and always use it second round, so I just wait for it to finish, heal, THEN engage my combo with one of the others on my team using a Mystery. Also, it helps against Scarlet Blazes who use Ignition a lot.
However, my attacking team with the combos used Chakra Dissection Blade and Neurotoxin because it fit well with the combinations, and I could ensure I would Immobolize someone. Honestly, I just got better ninjas and could afford to not have to go All-Or-Nothing. So your playstyle is up to you!
Just know that you're better than any healer out there.