Hey, I just beat level 90 and wanted to share my strategy on how I did it.Screen shot 2017-01-09 at 9.07 ...
Here is my Team:
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Talents:
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Strategy:
R1 main's mystery on kisame, because I was having an issue with his shark bomb taking my chakra before I could queue a mystery. Auto attacks go off, you will either combo on deidra or kisame, neither will die this round and sasori will summon some puppets.
R2 Mifune mystery on kisame, he will die this round. autos will kill off some puppets and bring deidra close to death, Mifune's ability should be off cooldown for killing a puppet.
R3 Mifune on Deidra, finish him off, use guy's mystery how you please (I tried to attack itachi for some damage but he does dodge.)
R4 You should have LMs mystery and Kimi's mystery to use, target itatchi to kill him off. Afterwards just focus your abilities on Sasori and he'll die shortly.
If all went well for you then congrats on beating exam level 90.