In the city's lore both Songo and Incubo are depicted with circles or fire in their mouths to represent them performing their designated jobs: carrying good souls like a wolf would their pup or devouring a corrupted soul. This is a detail shared by many of the statues, paintings, and mosaics spread through the city.
This time is with a Greek/Etruscan feel and iridescent/golden watercolors.
Copic pigment liner, Dr Mh Martin's pen white ink and Photoshop CC
Sogno and Incubo from Figlio d'Argento