Do anybody please tell what morpho spell bring me which avatar?

And what are point of school and how to gain them?

It says that I get 10 ingredient per game randomly. But it only gives me 6. And if it'll give me items randomly, so why do I play so long?

If you are "Trainee" it gives you 6 ingredient per game randomly. If you are "Apprentice" it gives you 10 ingredient per game randomly.