Here's a stategy for exam 101 using midnight blade:

Lineup-

X,X,X
X, Ao, X
Kakashi, Midnight Blade, Hinata

Skills:
3
2
1
3
2

Summon:
White Snake

There's a little RNG involved, but it's pretty easy using this team. Hinata may die by the end of round 2, but that's fine.. She's done her job as long as Jiraya and Zabuza are dead.

Round 1:
Use main mystery (first round, Jiraya should die)

Round 2:
Ao interrupt Kakashi
Kakashi Mystery on Zabuza (Zabuza should be dead by the end of this round)
***If Hinata dies, don't give up hope, it's still possible to complete the exam. ***

Round 3:
This round will be all auto attack, Kakashi should be dead by the end of this round

Round 4:
Use what ever mysteries may be available to nuke the water main.


Voila! Ninja exam 101 is complete!