Lvl 85 ninja exam:
x-x-guy
x-x-kimimaro
x-kabuto/sakura-mb
If you're using kabuto, DO NOT summon clones, the snake will have another attack if it kills one target. Use guy's mystery to interrupt orochimaru mystery(it's a 1 shot mystery).
Put your best defensive armor/magatama on kimi and mb.
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Lvl 86:
I'm still figuring it out myself, I don't want to change class to fire main.