When I was a kid, my teacher at the school read to the class a tales book, and I am trying to remember the name.
I think I remember the word "dragon" in the title of the book, but I am not 100% sure.
The tales were based on classic medieval tales but with some twists.
One of the tales was about a prince who was turned into a frog and found 3 golden nuggets. The first he gave to a princess for a kiss that turned him human, but when he found out his kingdom was at war, he gave a golden nugget to a witch to become a frog again.
Other stories were about a prince who gets engaged to a princess, and then he has to go to war, but he actually goes to the next kingdom and gets engaged to another princess, and when he is engaged to all the princesses of kingdoms around, he and his parents pick his favorite and marry her.
The book often repeats some words and terms a lot intentionally. In the frog story, I remember every time they say that something "looks shallow but actually is deep and deeper".
I am from Brazil, so I have no idea if it is a Brazilian book or if it was translated from a different language.
And finally, the year I was when I heard these tales was 2014, so the book is at least 12 years old now.
Those are all the details I can remember. I hope it's enough for someone to figure out which book it is.