Hi, So i have midnight blade with crow summon, anbu tactics, la giri decapation, thunder clone. Now my current setup is my main- hinata 3 star- sasuke 3 star- karin 3 star. Which characters are interchangable that still make a good combo with the rest of my team. These new characters should also be somewhat easily accessible (not requiring 400 seal scrolls to get xD). Thanks and please help!!