kurama naruto is very strong if u use earth main with shield passive and chakra wall mystery. U must put earth main as 2nd position ninja so ur opponent wont accoupunture ur earth main. Putting ninja dog shiba is very good since ur earth main will be the most targeted ninja on round 2.

Earth main - naruto kurama - roshi - killlerbee

the position :

earth main x x

roshi narutokurama x

killlerbee x x

talent: chakra walla - standart attack that give shield - chase no.4, passive that give 30% ninj att to ninjas who have shield, passive no.1

summon: KoH or chameleon

make ur earth main mood to focus on resistance so he will give more shield to ur ninjas. With that team, lightning team will get wrecked at round 3 assuming u have atlest same power or not less than 15k power with ur opponent. Dont forget to always use killerbee 7 sword style to your kurama naruto.