I did it at 52k power,with formation

sage Naruto,Wind main,KK Gaara

*,Iruka,*

Summon:Bull or Rhino

Talents: 34233

Start with Iruka on lightning main,your Wind main and Sage Naruto must not be blinded,combo must kill lightning.Second round,Sage Naruto on fire main,your wind main skill,Iruka on wind..3th round Gaara on wind,and the rest is killing earth and water