Im using this right now (and switching to Hinata-Karin-Kakashi if i face a higher LVL like in sage because the poison, people, knows nothing about lvls.. and also its a 9x combo)
http://i.imgur.com/RQBMvoR.png
http://i.imgur.com/3RJZ3Qh.png
This is a 7x combo but with tobis passive is like 2000x combo.
1st round I use hinatas shield, except if lightning which i wait a little bit to see if he have lightning armour.
Also I check if opponent have a good initiative, because my strategy splits in 2:
If he does, then I use tobi skill, and I shield/heal whoever got comboed.
If he doesnt... then i just use MC skill and kill 1 opponent.
Then it's over.