Wyrd Sisters by Terry Pratchett
Three witches meet. Magrat, the youngest of them, thought this coven business sounded good and persuaded Granny Weatherwax and Nanny Ogg to join her. Which means when the king's loyal servant flees the castle with the infant after the king is murdered by a usurper, he finds them. And passes over the baby and dies.
The pursuers are less eager to take on witches, and the three of them persuade a couple with some traveling actors to take him on. They give him three gifts, and later ponder how to bring him back as king -- the land is not happy.
This involves a lot of Shakespeare allusions, a Fool, a family resemblence, a stone from the castle, working magic on time, a old witch who featured in "Sleeping Beauty", "Cinderella", and "Hansel and Gretel", a dwarf thrown out of the mine because absent-mindedness and pick axes don't mix, and much more.
Witches Abroad by Terry Pratchett
A witch dies. With her fairy godmothering duties undone. So she leaves Magrat her wand, despite its tendency to fixate on pumpkins, and sternly forbids the other two to interfere. Which is how they all set out to foreign parts to bring a tale to completion. On the way, they find that someone is out to force everything into story. Truly tragic when a wolf is made to become the one in "Little Red Riding Hood."
Before it's done, it involves voodoo, a ball, a strange bedroom, making the clock strike twelve early, a girl who doesn't want to go to the ball or marry the prince, some card-sharps getting fleeced, and much more.