hey guys i just got to 50 and started messing with summons and so,i have ton ton which isnt that much helpful but i got a purple summon from the summon scrolls named kamatari which i dont think works with my team as well :(

i need help picking summon i am currently trying to get some more like the snakes frogs birds etc... but i dont know which one will go well with my team because the one i got is basicaly ruining my combos.

plus if someone can throw some tips about ninja exam lvl 60 that would be great :D thanks!