My lineup I use for arena:
x Sai Kakashi
x Main Hinata
x x x
Give yourself Neurotoxin and Chakra Dissection blade, along with the Water Shark mystery and healing as your standard attack. Also put on your Poison Tai. What happens is that you can throw Kakashi's Mystery at someone to break their combos, getting about twelve hits with Acupuncture, Ignite, Immobolize, Paralyze, and Poison. Add Chameleon since this combo is a full-monty, meaning you go all-in each round, and Chameleon will add both poison and sometimes Immobolize if you crit, due to Neurotoxin. Round 3, throw a Shark, completely status over another person. Between the Ignition and the Poison, their healers will be struggling and your Acupunctures will keep big Mysteries in check.
I've only really gone up against one person who could break my streaks, and he had like. Wind Blade Asuma, and was Fire. But in any case, this build should help you loads!