hmm I would have to say like...Light Control no Jutsu. It could create darkness in a certain area so people cant see, except for me
Then I would use like some type of Jutsu thats dark in color that I could attack long range with so I could hit the oponent but he wouldnt people able to know where I was and I wouldnt need to get close to him which would in turn prevent me from injury.
Or, I could like blind the guy temporarily and attack like that, and it would possibly even nullify techniques like the sharingan and byakugan.