Oratorio is a fragment of what was formerly a disc celestial. This fragment is like a personal idyll. It is only a few kilometres wide across, but it has numerous cliff faces providing shade from an archipelago of distant lumic celestials. The minor atmosphere of Oratorio is crystalline. Because of this as things move on the fragment they leave a slight twinkly colourful aura behind them in trail. The atmosphere also refracts the luminescence of Sarcinia, scattering the ground with soft slowly-shifting tones. Other than this the level of light is mostly dusky. The ground is coated with a soft flowing waxy material, akin to honey if it wasn't sticky. Material formations can be hard and rough, like columns of rock dotting borders of cliffs but they are softened with the shielding of wax.
What's that lumic celestial far in the distance?