The Trial of the Heart and Soul
As the Legacies enter the large tower like structure that Batman built for them within the Dreaming, they are confronted by a large empty room which only has a few podiums.
In fact, there are seven pedestals and each one has a small dwarf stood a top of it wearing a different color of hat. Originally the test for the Martian Manhunter, this has now become a group exercise. Each Dwarf is holding an Apple, it is up for the legacies to listen to the dwarfs and decide which are honest, and which are lying for if they cannot eat the apples of the good dwarfs and accidently fail the test they will fail and wake up in their beds believing the whole thing was a dream.
Dream will explain the task once again when he gives the Dwarfs permission to speak.