This is a rather late reply haha, but I'm currently using Onoki with a lightning main. Team is Lightning Main equipped with calm mind + bloodthirsty (provides 40 chakra per round) and Chidori Blade(Shadow), + Onoki, + GNW Tenten, + Pain Jigokudo. The strategy is to use your main's 40 chakra boost to activate GNW Tenten round 1, and both your main's chidori blade and onoki's mystery in round 2 (or resurrect a dead ninja with pain), then GNW Tenten round 3. The chakra natures don't match up at all, but this team is surprisingly strong since it has pretty high firepower as well as heal/resurrect.