Things I learned from Seventh Son
You already know how this goes, complete at will :)
1) A witch that can vanish into thin air will run around like a caged hamster if threatened.
2) A useless warrior can be a great fighter as soon as his mom tells him thus.
3) Before a half-witch can use a magical amulet, he has to know about his ancestry and be told by his mom that it's ok to do that.
4) A boggart is a completely misunderstood creature that only wants to hold the tiny toys which drove over his nose in his hand and play with them for a while.
5) The spook's most dangerous weapon is his varying interpretation of the fighting code of honour. He's basically judge and jurist.
6) A good death is its own reward.